Don't include bitness in version code

tools/update_android_version.sh

@@ -9,12 +9,6 @@ VERSIONCODE=$(($(($minor*10000)) + $VERSIONCODE))
 VERSIONCODE=$(($(($patch*1000)) + $VERSIONCODE))
 VERSIONCODE=$(($(($dev)) + $VERSIONCODE))
 
-# The android versionCode is for the entire package. It is the same for the 32 and 64 bit APKs.
-# At one point it was thought the versionCode was specific to APK. Hence the 32/64 bitness was
-# included as a prefix. That was incorrect. But now we are stuck with version codes starting with
-# a prefix of 64.
-VERSIONCODE=64$VERSIONCODE
-
 MANIFEST_FILE=android/AndroidManifest.xml
 
 # manifest package