just macosx python3.9

Author: Jeff Whitaker

.github/workflows/build-wheels.yml

@@ -24,15 +24,17 @@ jobs:
 
       fail-fast: false
       matrix:
-        python-version: ["3.7", "3.8", "3.9"]
-        #os: [ubuntu-latest, macos-latest]
+#       python-version: ["3.7", "3.8", "3.9"]
+#       os: [ubuntu-latest, macos-latest]
+#       platform: [x64, x32]
+#       MB_ML_VER: [1,2010,2014]
+        python-version: ["3.9"]
+        platform: [x64]
         os: [macos-latest]
-        platform: [x64, x32]
-        #MB_ML_VER: [1,2010,2014]
-        MB_ML_VER: 1
-        exclude:
-          - os: macos-latest  
-            platform: x32
+        MB_ML_VER: [1]
+#       exclude:
+#         - os: macos-latest  
+#           platform: x32
 #         - os: macos-latest  
 #           MB_ML_VER: 1
 #         - os: macos-latest