This reverts commit 47d58e2a69.
The revert restores the older method of test AP selction: hard
code the name of the test AP. Subsequent CLs will update to
preferred test AP selection method.
Bug: 74518964
Test: atest WifiRttTest (with rest of CL stack)
Change-Id: Iab71978607aeaf37babdb1afdaeca5c114ccdbf7