gnu: Remove rust-bugreport-0.3.

* gnu/packages/crates-io.scm (rust-bugreport-0.3): Delete variable.

gnu/packages/crates-io.scm

@@ -8793,24 +8793,6 @@ automatically collect information about the system and the environment that
 users can send along with a bug report.")
     (license (list license:expat license:asl2.0))))
 
-(define-public rust-bugreport-0.3
-  (package
-    (inherit rust-bugreport-0.4)
-    (name "rust-bugreport")
-    (version "0.3.0")
-    (source
-     (origin
-       (method url-fetch)
-       (uri (crate-uri "bugreport" version))
-       (file-name (string-append name "-" version ".tar.gz"))
-       (sha256
-        (base32 "1n5f1nkqbc5yf9bckjap49pwnqnvdczm6x9y23caaghpgw0n4rqi"))))
-    (arguments
-     `(#:skip-build? #t
-       #:cargo-inputs
-       (("rust-snailquote" ,rust-snailquote-0.3)
-        ("rust-sys-info" ,rust-sys-info-0.7))))))
-
 (define-public rust-build-const-0.2
   (package
     (name "rust-build-const")