multiful dependency of google_api_core

Author: hephaex

vendor/ngc-tensorflow/requirements.py36.txt

@@ -116,7 +116,7 @@ geoplotlib==0.3.2
 gin-config==0.3.0
 gitdb==4.0.7
 GitPython==3.1.14
-google-api-core==1.23.0
+google-api-core
 google-api-python-client==1.12.8
 google-apitools==0.5.31
 google-auth==1.21.1