gnu: r-with-tests: Drop labels from input lists.

* gnu/packages/statistics.scm (r-with-tests)[native-inputs]: Drop input
labels.
[inputs]: Same.
(r-minimal)[arguments]: Remove lookup of "texlive" package.

gnu/packages/statistics.scm

@@ -366,11 +366,11 @@ as.POSIXct(if (\"\" != Sys.getenv(\"SOURCE_DATE_EPOCH\")) {\
     ;; As the JDK is a rather large input with only very limited effects on R,
     ;; we decided to drop it.
     (native-inputs
-     `(("bzip2" ,bzip2)
+     (list bzip2
-       ("perl" ,perl)
+           perl
-       ("pkg-config" ,pkg-config)
+           pkg-config
-       ("texinfo" ,texinfo) ; for building HTML manuals
+           texinfo                      ; for building HTML manuals
-       ("texlive" ,(texlive-updmap.cfg (list texlive-ae
+           (texlive-updmap.cfg (list texlive-ae
                                      texlive-inconsolata
                                      texlive-fonts-ec
                                      texlive-grfext
@@ -383,31 +383,31 @@ as.POSIXct(if (\"\" != Sys.getenv(\"SOURCE_DATE_EPOCH\")) {\
                                      texlive-latex-tools
                                      texlive-latex-upquote
                                      texlive-url
-                                        texlive-latex-xkeyval)))
+                                     texlive-latex-xkeyval))
-       ("tzdata" ,tzdata-for-tests)
+           tzdata-for-tests
-       ("xz" ,xz)))
+           xz))
     (inputs
-     `(;; We need not only cairo here, but pango to ensure that tests for the
+     (list coreutils
+           curl
+           openblas
+           gfortran
+           icu4c
+           libjpeg-turbo
+           libpng
+           libtiff
+           libxt
+           ;; We need not only cairo here, but pango to ensure that tests for the
            ;; "cairo" bitmapType plotting backend succeed.
-       ("pango" ,pango)
+           pango
-       ("coreutils" ,coreutils)
+           pcre2
-       ("curl" ,curl)
+           readline
-       ("openblas" ,openblas)
+           tcl
-       ("gfortran" ,gfortran)
+           tk
-       ("icu4c" ,icu4c)
+           which
-       ("libjpeg" ,libjpeg-turbo)
+           zlib
-       ("libpng" ,libpng)
-       ("libtiff" ,libtiff)
-       ("libxt" ,libxt)
-       ("pcre2" ,pcre2)
-       ("readline" ,readline)
            ;; This avoids a reference to the ungraftable static bash.  R uses the
            ;; detected shell for the "system" procedure.
-       ("bash" ,bash-minimal)
+           bash-minimal))
-       ("tcl" ,tcl)
-       ("tk" ,tk)
-       ("which" ,which)
-       ("zlib" ,zlib)))
     (native-search-paths
      (list (search-path-specification
             (variable "R_LIBS_SITE")
@@ -452,8 +452,6 @@ available, greatly increasing its breadth and scope.")
                           "|"
                           (assoc-ref inputs "perl")
                           "|"
-                          (assoc-ref inputs "texlive")
-                          "|"
                           (assoc-ref inputs "texlive-bin")
                           "|"
                           (assoc-ref inputs "texinfo")