Revert "Add SupplementalProcess stubs and bootclasspath fragment"

Revert "Add framework-supplementalprocess to PRODUCT_APEX_BOOT_JARS"

Revert "Add framework-supplementalprocess prebuilts"

Revert submission 16194363-supplementalprocess-stubs

Reason for revert: PDK build break
Reverted Changes:
Ie1d3605d2:Add SupplementalProcess stubs and bootclasspath fr...
I1ea34faba:Add framework-supplementalprocess to PRODUCT_APEX_...
I8ef2a4c0f:Add jars and fragment to SupplementalProcess apex
Ibf9444f89:Add framework-supplementalprocess prebuilts

Change-Id: Ic569389a4b3a54323c283e9573590686ce27f491