gnu: Remove rust-capnpc-0.10.

* gnu/packages/crates-io.scm (rust-capnpc-0.10): Delete variable.

gnu/packages/crates-io.scm

@@ -9310,24 +9310,6 @@ remote procedure call protocol")
     (description "Cap'n Proto code generation")
     (license license:expat)))
 
-(define-public rust-capnpc-0.10
-  (package
-    (inherit rust-capnpc-0.13)
-    (name "rust-capnpc")
-    (version "0.10.2")
-    (source
-      (origin
-        (method url-fetch)
-        (uri (crate-uri "capnpc" version))
-        (file-name
-         (string-append name "-" version ".tar.gz"))
-        (sha256
-         (base32
-          "1zxbmdkr0xfzkfq9p8zn7pp9jjq275qhr8fh9a0cc0ab37yfvbyj"))))
-    (arguments
-     `(#:cargo-inputs
-       (("rust-capnp" ,rust-capnp-0.10))))))
-
 (define-public rust-caps-0.5
   (package
     (name "rust-caps")