gnu: Remove rust-proc-macro2-1.0.34.

* gnu/packages/crates-io.scm (rust-proc-macro2-1.0.34): Remove variable.

Change-Id: I14edc5e8dbf26b96f42d9fe257ede17cdbc2a410

gnu/packages/crates-io.scm

@@ -55537,26 +55537,6 @@ in your code.")
 in terms of the upstream unstable API.")
     (license (list license:asl2.0 license:expat))))
 
-(define-public rust-proc-macro2-1.0.34
-  (package
-    (inherit rust-proc-macro2-1)
-    (name "rust-proc-macro2")
-    (version "1.0.34")
-    (source
-     (origin
-       (method url-fetch)
-       (uri (crate-uri "proc-macro2" version))
-       (file-name (string-append name "-" version ".tar.gz"))
-       (sha256
-        (base32
-         "1c93jhwl8lv3hiqqvdhd2d2xhjryh5bqb9w5icr5i7bw1wnfk11g"))))
-    (arguments
-     `(#:cargo-test-flags '("--lib")
-       #:cargo-inputs
-       (("rust-unicode-xid" ,rust-unicode-xid-0.2))
-       #:cargo-development-inputs
-       (("rust-quote" ,rust-quote-1))))))
-
 (define-public rust-proc-macro2-0.4
   (package
     (inherit rust-proc-macro2-1)