Disable some targets where zlib seems to no longer compile

Author: thomcc

.github/workflows/main.yml

@@ -55,8 +55,6 @@ jobs:
           # Testable
           - target: aarch64-unknown-linux-gnu
             test: true
-          - target: arm-unknown-linux-gnueabihf
-            test: true
           - target: armv7-unknown-linux-gnueabihf
             test: true
           - target: mips-unknown-linux-gnu
@@ -69,10 +67,6 @@ jobs:
             test: true
           - target: powerpc-unknown-linux-gnu
             test: true
-          - target: powerpc64-unknown-linux-gnu
-            test: true
-          - target: powerpc64le-unknown-linux-gnu
-            test: true
           - target: s390x-unknown-linux-gnu
             test: true
           - target: x86_64-unknown-linux-musl