ref – https://stackoverflow.com/questions/39459467/remove-a-modified-file-from-pull-request

git checkout origin/master — ios/Podfile
git checkout origin/master — ios/Runner.xcodeproj/project.pbxproj
git checkout origin/master — ios/Runner.xcworkspace/contents.xcworkspacedata
git checkout origin/master — pubspec.lock
git commit -m “Removed trivial files from pull request” .
git push