Remove dalvik.vm.usejitprofiles system property.

Disabling profiles is no longer supported. Most of the profile support
has been active even when this property was false, and it won't be
supported in the ART Service.

(cherry-picked from commit 7bf4c34e)

Test: Boot
Bug: 254434433
Merged-In: I1a77f006f204cd2f1fb302bcf4b1126f54e2e78b
Change-Id: I1a77f006f204cd2f1fb302bcf4b1126f54e2e78b