Remove "is_inlined" from header-abi-dumper

This commit removes "is_inlined" flag from lsdump's VTableComponent,
because the clang library used to walk the ast doesn't report accurate
information about whether a member function is inlined or not.

Also update the testcases.

Bug: 80217511
Test: ./tests/test.py
Change-Id: I0e133b140a4f3debff8030de7d6712590cf98d76