cameraservice: Remove unused imports

Remove unused BufferQueue imports from a file that doesn't use them.

Bug: 340933206
BYPASS_IGBP_IGBC_API_REASON: this CL is part of the migration.
FLAG: EXEMPT refactor
Test: compiles

Change-Id: I93f344e9db46017c7e3a74fc0e7a6de1d522d597
1 file changed