remove zlib patch

Author: h-vetinari

recipe/meta.yaml

@@ -8,10 +8,6 @@ package:
 source:
   url: https://github.com/googleapis/{{ name }}/archive/v{{ version }}.tar.gz
   sha256: 168c38219feb5a2c6b81bec5960cd067f6cda3daa83cd9761fa04f27d2b78f17
-  patches:
-    # make sure that unversioned zlib.so is not necessary
-    # merely to link against this package
-    - patches/0001-make-zlib-linkage-private.patch
 
 build:
   number: 1