Remove flagging from launched ASM APIs

These flags were rolled out in B and can be removed. This CL only
affects the API changes as the logic will undergo another iteration to
be lauched with a new flag in C.

Bug: 416033243
Flag: EXEMPT removing android.security.asm_restrictions_enabled
Test: atest ActivitySecurityModelTest
Change-Id: I5060273c38d97e7250d7806197215e1d610e4fd3