disable avx2 for wheel (#253)

* disable avx2 on windows and linux

* disable avx2 on macos

Author: Czaki

.github/workflows/wheel.yaml

@@ -14,7 +14,8 @@ jobs:
       CIBW_TEST_COMMAND: pytest --pyargs numcodecs
       CIBW_TEST_REQUIRES: pytest
       CIBW_SKIP: "*27* pp*"
-      CIBW_ENVIRONMENT_MACOS: "MACOSX_DEPLOYMENT_TARGET=10.9"
+      CIBW_ENVIRONMENT: "DISABLE_NUMCODECS_AVX2=1"
+      CIBW_ENVIRONMENT_MACOS: "MACOSX_DEPLOYMENT_TARGET=10.9 DISABLE_NUMCODECS_AVX2=1"
 
     steps:
       - uses: actions/checkout@v1