protobuf-c: remove patch now included upstream

Included in:

protobuf-c/protobuf-c@9e43a9e
protobuf-c/protobuf-c@a0841cc

Author: OddBloke

protobuf-c.yaml

@@ -28,10 +28,6 @@ pipeline:
       repository: https://github.com/protobuf-c/protobuf-c.git
       tag: v${{package.version}}
 
-  - uses: patch
-    with:
-      patches: deprecated-FileDescriptorLegacy.patch
-
   - uses: autoconf/configure
 
   - uses: autoconf/make