[mythtv] Android build remove the Schema Version Check Bypass

[Peter Bennett]

We have got to the point where mythfrontend does not work well with a 
wrong schema version. The latest master mythfrontend cannot display the 
program guide when connected to v30 backend, due to the delete flag 
changes. It gives an incorrect message saying you have no channels 
configured.

Up to now, the Android build has bypassed version checks and could run 
with any version of mythbackend.

It is time to remove from the android packaging, the line
IGNOREDEFINES="-DIGNORE_SCHEMA_VER_MISMATCH -DIGNORE_PROTO_VER_MISMATCH"

People will no longer be able to use android mythfrontend with a 
different version of the backend.

I will make the change and test it in packaging/master. I will leave 
packaging/30-fixes as is, V30 may continue to work with some different 
versions.

Does anybody have an opinion on this? Will it cause any problems?

Peter