Revert "Add SupplementalProcess stubs and bootclasspath fragment"

Revert "Add bootclasspath config in Auxiliary."

Revert "Add framework-auxiliary to PRODUCT_APEX_BOOT_JARS"

Revert submission 16684516-auxiliary_bcp

Reason for revert: pdk build breakage
Reverted Changes:
I8c92d2ccb:Add bootclasspath config in Auxiliary.
I9ac910fa2:Add SupplementalProcess stubs and bootclasspath fr...
I7cf3b31b0:Add framework-auxiliary to PRODUCT_APEX_BOOT_JARS

Bug: 216218564
Change-Id: Ie4374fed1e4869ae194b59e2298db785e647ed4f