Remove test mapping file for ImmutabilityAnnotationProcessorUnitTests

The test is already covered in host_unit_tests

Bug: 265439335
Test: none
Change-Id: Ie9ba5591475ae9382d4ce6d418ddb580a60aa007
(cherry picked from commit 94ce5bc05cd61126e69bfaa61ae717c82c8f57d4)
1 file changed