Remove aconfig dependency for 'services.jar' flags via `static_libs`

Usage of `static_libs` causes `testBootClasspathAndSystemServerClasspath_nonDuplicateClasses` test to fail.

Test: atest CtsStrictJavaPackagesTestCases:android.compat.sjp.cts.StrictJavaPackagesTest#testBootClasspathAndSystemServerClasspath_nonDuplicateClasses

Bug: 307923417
Change-Id: I83d424cd1cf9dd69f3d9dd79468bb2f2c42a71c7