Remove TEST_MAPPING due to AJUR filter behavior

AJUR can't support mixed filters of class and package. There are 2 other
TEST_MAPPING files containing about 6 tests using filter on package.

Once b/117880789 is fixed, we can add this TEST_MAPPING file back.

Bug: 120462824
Test: None
Change-Id: Iafa0286c18f2c6fd77c5b603a72882e710cef6ee