gnu: Remove rust-mp4-0.9.

* gnu/packages/crates-io.scm (rust-mp4-0.9): Delete variable.

Change-Id: I76d34442491ffdea58c9f2b5e73e8709a7e6f7b5

gnu/packages/crates-io.scm

@@ -44012,33 +44012,6 @@ debug_assert_* macros.")
     (description "This package provides a DHCP Client Library.")
     (license license:asl2.0)))
 
-(define-public rust-mp4-0.9
-  (package
-    (name "rust-mp4")
-    (version "0.9.2")
-    (source
-     (origin
-       (method url-fetch)
-       (uri (crate-uri "mp4" version))
-       (file-name (string-append name "-" version ".tar.gz"))
-       (sha256
-        (base32 "12rwsjj5fn5h198ih0ig08vz34rfjlnf8rw3d0i5jwbaay88f1kq"))))
-    (build-system cargo-build-system)
-    (arguments
-     `(#:cargo-inputs
-       (("rust-byteorder" ,rust-byteorder-1)
-        ("rust-bytes" ,rust-bytes-1)
-        ("rust-num-rational" ,rust-num-rational-0.4)
-        ("rust-serde" ,rust-serde-1)
-        ("rust-serde-json" ,rust-serde-json-1)
-        ("rust-thiserror" ,rust-thiserror-1))
-       #:cargo-development-inputs
-       (("rust-criterion" ,rust-criterion-0.3))))
-    (home-page "https://github.com/alfg/mp4-rust")
-    (synopsis "MP4 reader and writer library in Rust")
-    (description "mp4 is a Rust library to read and write ISO-MP4 files.")
-    (license license:expat)))
-
 (define-public rust-mptcp-pm-0.1
   (package
     (name "rust-mptcp-pm")