Stop building wheel for python 3.5

kokoro/release/python/linux/build_artifacts.sh

@@ -59,7 +59,6 @@ build_crosscompiled_aarch64_artifact_version() {
   build_artifact_version $@
 }
 
-build_artifact_version 3.5
 build_artifact_version 3.6
 build_artifact_version 3.7
 build_artifact_version 3.8

kokoro/release/python/macos/build_artifacts.sh

@@ -55,8 +55,3 @@ build_artifact_version 3.6
 build_artifact_version 3.7
 build_artifact_version 3.8
 build_artifact_version 3.9
-
-# python OSX10.9 does not have python 3.5
-export MB_PYTHON_OSX_VER=10.6
-build_artifact_version 3.5
-

kokoro/release/python/windows/build_artifacts.bat

@@ -32,16 +32,6 @@ mkdir %ARTIFACT_DIR%
 
 REM Build wheel
 
-SET PYTHON=C:\python35_32bit
-SET PYTHON_VERSION=3.5
-SET PYTHON_ARCH=32
-CALL build_single_artifact.bat || goto :error
-
-SET PYTHON=C:\python35
-SET PYTHON_VERSION=3.5
-SET PYTHON_ARCH=64
-CALL build_single_artifact.bat || goto :error
-
 SET PYTHON=C:\python36_32bit
 SET PYTHON_VERSION=3.6
 SET PYTHON_ARCH=32

kokoro/release/python/windows/build_single_artifact.bat

@@ -1,11 +1,5 @@
 setlocal
 
-if %PYTHON%==C:\python35_32bit set generator=Visual Studio 14
-if %PYTHON%==C:\python35_32bit set vcplatform=Win32
-
-if %PYTHON%==C:\python35 set generator=Visual Studio 14 Win64
-if %PYTHON%==C:\python35 set vcplatform=x64
-
 if %PYTHON%==C:\python36_32bit set generator=Visual Studio 14
 if %PYTHON%==C:\python36_32bit set vcplatform=Win32