gnu: Remove rust-drop-bomb-0.1.

* gnu/packages/crates-io.scm (rust-drop-bomb-0.1): Delete variable.

Change-Id: I47491f444e091b144b474718760a764cf3793e7d

gnu/packages/crates-io.scm

@@ -19096,29 +19096,6 @@ Rust.")
     (description "Graphics state blocks for gfx-rs.")
     (license license:asl2.0)))
 
-(define-public rust-drop-bomb-0.1
-  (package
-    (name "rust-drop-bomb")
-    (version "0.1.5")
-    (source
-     (origin
-       (method url-fetch)
-       (uri (crate-uri "drop_bomb" version))
-       (file-name
-        (string-append name "-" version ".tar.gz"))
-       (sha256
-        (base32
-         "1qc59a53ngwxpnbvl8xidp2cmwrl671dhbzw7zijmjjaq0hqxnlv"))))
-    (build-system cargo-build-system)
-    (arguments `(#:skip-build? #t))
-    (home-page
-     "https://github.com/matklad/drop_bomb")
-    (synopsis
-     "Runtime guard for implementing linear types")
-    (description
-     "This package provides a runtime guard for implementing linear types.")
-    (license (list license:expat license:asl2.0))))
-
 (define-public rust-dtoa-0.4
   (package
     (name "rust-dtoa")