Opt in libcrt

Bufferhubd, its client libraries and tests were failing due to
libcrt change. However, they no longer fails on master branch TOT now.
This change removes the libcrt switch that were introduced in b/117565638.

Bug: 117568153
Bug: 117565638
Test: on phone targets (blueline crosshatch taimen)
BufferHub_test BufferHubServer_test VtsHalBufferHubV1_0TargetTest

Test: on phone_xr targets (blueline_xr crosshatch_xr taimen_xr)
the above tests and the following tests:
buffer_hub-test dvr_api-test dvr_buffer_queue-test dvr_display-test
buffer_hub_queue-test buffer_hub_queue_producer-test


Change-Id: I469dd939826df30ee6893d34c510da448fba6b9e