No more IME tests from FrameworksServicesTests

This follows up to our previous CL [1], which moved serveral unit
tests from

  FrameworksServicesTests

to

  FrameworksInputMethodSystemServerTests

for better stability and test separatoin.

With tihs CL all the remaining unit tests are also moved.

Fix: 319948502
Test: atest FrameworksInputMethodSystemServerTests
Change-Id: Id01538b02e0768a1f3403cff2fe8095a34bae893