Remove leftover patches.

* gnu/packages/patches/guix-test-networking.patch: Delete it.
* gnu/packages/patches/libtool-skip-tests.patch: Delete it.
* gnu/packages/patches/python-sqlite-3.8.4-test-fix.patch: Delete it.
* gnu/packages/patches/udev-gir-libtool.patch: Delete it.
* gnu-system.am (dist_patch_DATA): Remove them as well.

gnu-system.am

@@ -448,7 +448,6 @@ dist_patch_DATA =						\
   gnu/packages/patches/guile-default-utf8.patch			\
   gnu/packages/patches/guile-linux-syscalls.patch		\
   gnu/packages/patches/guile-relocatable.patch			\
-  gnu/packages/patches/guix-test-networking.patch		\
   gnu/packages/patches/gtkglext-disable-disable-deprecated.patch \
   gnu/packages/patches/hop-bigloo-4.0b.patch			\
   gnu/packages/patches/hop-linker-flags.patch			\
@@ -466,7 +465,6 @@ dist_patch_DATA =						\
   gnu/packages/patches/liboop-mips64-deplibs-fix.patch		\
   gnu/packages/patches/libmad-mips-newgcc.patch			\
   gnu/packages/patches/libtheora-config-guess.patch		\
-  gnu/packages/patches/libtool-skip-tests.patch			\
   gnu/packages/patches/libtool-skip-tests2.patch		\
   gnu/packages/patches/libssh-CVE-2014-0017.patch		\
   gnu/packages/patches/libvpx-fix-armhf-link.patch		\
@@ -524,7 +522,6 @@ dist_patch_DATA =						\
   gnu/packages/patches/pyqt-configure.patch			\
   gnu/packages/patches/python-fix-tests.patch			\
   gnu/packages/patches/python-libffi-mips-n32-fix.patch		\
-  gnu/packages/patches/python-sqlite-3.8.4-test-fix.patch	\
   gnu/packages/patches/python2-rdflib-drop-sparqlwrapper.patch	\
   gnu/packages/patches/python2-sqlite-3.8.4-test-fix.patch	\
   gnu/packages/patches/python2-pygobject-2-gi-info-type-error-domain.patch \
@@ -550,7 +547,6 @@ dist_patch_DATA =						\
   gnu/packages/patches/teckit-cstdio.patch			\
   gnu/packages/patches/texi2html-document-encoding.patch	\
   gnu/packages/patches/texi2html-i18n.patch			\
-  gnu/packages/patches/udev-gir-libtool.patch			\
   gnu/packages/patches/unzip-CVE-2014-8139.patch		\
   gnu/packages/patches/unzip-CVE-2014-8140.patch		\
   gnu/packages/patches/unzip-CVE-2014-8141.patch		\

gnu/packages/patches/guix-test-networking.patch

@@ -1,15 +0,0 @@
-Skip that test when the network is unreachable.
-
-diff --git a/tests/packages.scm b/tests/packages.scm
-index 04e3b0b..6ac215b 100644
---- a/tests/packages.scm
-+++ b/tests/packages.scm
-@@ -139,6 +139,8 @@
-     (and (direct-store-path? source)
-          (string-suffix? "utils.scm" source))))
- 
-+(unless (false-if-exception (getaddrinfo "www.gnu.org" "80" AI_NUMERICSERV))
-+  (test-skip 1))
- (test-equal "package-source-derivation, snippet"
-   "OK"
-   (let* ((file   (search-bootstrap-binary "guile-2.0.9.tar.xz"

gnu/packages/patches/libtool-skip-tests.patch

@@ -1,55 +0,0 @@
-Because our GCC 'lib' spec automatically adds '-rpath' for each '-L'
-and a couple more '-rpath, there are two test failures:
-one in demo.test, and one in destdir.at.  Disable these.
-
-Also skip the nopic test on ARM and MIPS systems.
-
---- libtool-2.4.6/tests/demo.at.orig	2015-01-16 13:52:04.000000000 -0500
-+++ libtool-2.4.6/tests/demo.at	2015-02-16 10:48:51.435851966 -0500
-@@ -510,7 +510,7 @@
- AT_SETUP([force non-PIC objects])
- 
- AT_CHECK([case $host in
--hppa*|x86_64*|s390*)
-+hppa*|x86_64*|s390*|arm*|mips*)
-   # These hosts cannot use non-PIC shared libs
-   exit 77 ;;
- *-solaris*|*-sunos*)
---- libtool-2.4.6/tests/testsuite.orig	2015-02-15 11:15:25.000000000 -0500
-+++ libtool-2.4.6/tests/testsuite	2015-02-16 10:50:58.736483216 -0500
-@@ -8741,7 +8741,7 @@
- 
- { set +x
- $as_echo "$at_srcdir/demo.at:535: case \$host in
--hppa*|x86_64*|s390*)
-+hppa*|x86_64*|s390*|arm*|mips*)
-   # These hosts cannot use non-PIC shared libs
-   exit 77 ;;
- *-solaris*|*-sunos*)
-@@ -8766,7 +8766,7 @@
- "
- at_fn_check_prepare_notrace 'a `...` command substitution' "demo.at:535"
- ( $at_check_trace; case $host in
--hppa*|x86_64*|s390*)
-+hppa*|x86_64*|s390*|arm*|mips*)
-   # These hosts cannot use non-PIC shared libs
-   exit 77 ;;
- *-solaris*|*-sunos*)
-@@ -9298,7 +9298,7 @@
- #AT_START_34
- at_fn_group_banner 34 'demo.at:548' \
-   "hardcoding library path" "                        " 4
--at_xfail=no
-+at_xfail=yes
-       test no = "$ACLOCAL" && at_xfail=yes
-       test no = "$AUTOHEADER" && at_xfail=yes
-       test no = "$AUTOMAKE" && at_xfail=yes
-@@ -27243,7 +27243,7 @@
- #AT_START_98
- at_fn_group_banner 98 'destdir.at:75' \
-   "DESTDIR with in-package deplibs" "                " 8
--at_xfail=no
-+at_xfail=yes
-       eval `$LIBTOOL --config | $GREP '^fast_install='`
-            case $fast_install in no) :;; *) false;; esac && at_xfail=yes
- (

gnu/packages/patches/python-sqlite-3.8.4-test-fix.patch

@@ -1,15 +0,0 @@
-From resolution of upstream python issue #20901: http://bugs.python.org/issue20901
-
-diff --git a/Lib/sqlite3/test/hooks.py b/Lib/sqlite3/test/hooks.py
---- Lib/sqlite3/test/hooks.py
-+++ Lib/sqlite3/test/hooks.py
-@@ -162,7 +162,7 @@ class ProgressTests(unittest.TestCase):
-             create table bar (a, b)
-             """)
-         second_count = len(progress_calls)
--        self.assertGreater(first_count, second_count)
-+        self.assertGreaterEqual(first_count, second_count)
- 
-     def CheckCancelOperation(self):
-         """
-

gnu/packages/patches/udev-gir-libtool.patch

@@ -1,17 +0,0 @@
-Without this patch, 'ld' as invoked by 'g-ir-scanner' fails to find -lgudev-1.0
-This is because libtool puts it in $(top_builddir)/.libs.
-
-This patch forces 'g-ir-scanner' to use libtool, which enables it to find
-libgudev-1.0.la.
-
---- udev-182/Makefile.in	2014-06-22 14:55:07.000000000 +0200
-+++ udev-182/Makefile.in	2014-06-22 14:55:15.000000000 +0200
-@@ -3622,7 +3622,7 @@ test-sys-distclean:
- @ENABLE_GUDEV_TRUE@@ENABLE_INTROSPECTION_TRUE@		--namespace GUdev \
- @ENABLE_GUDEV_TRUE@@ENABLE_INTROSPECTION_TRUE@		--nsversion=1.0 \
- @ENABLE_GUDEV_TRUE@@ENABLE_INTROSPECTION_TRUE@		--include=GObject-2.0 \
--@ENABLE_GUDEV_TRUE@@ENABLE_INTROSPECTION_TRUE@		--library=gudev-1.0 \
-+@ENABLE_GUDEV_TRUE@@ENABLE_INTROSPECTION_TRUE@		--library=gudev-1.0 --libtool=$(top_builddir)/libtool \
- @ENABLE_GUDEV_TRUE@@ENABLE_INTROSPECTION_TRUE@		--library-path=$(top_builddir)/src \
- @ENABLE_GUDEV_TRUE@@ENABLE_INTROSPECTION_TRUE@		--library-path=$(top_builddir)/src/gudev \
- @ENABLE_GUDEV_TRUE@@ENABLE_INTROSPECTION_TRUE@		--output $@ \