Revert apex support from wpa_supplicant

This is a revert of  1f2ba85e6d4117e16d5132a82c8d775e1c0704a7.

This is a preparation for the follow up change to remove hard-coded
vendor apex name: com.android.wifi.hal.

Bug: 325392832
Test: m wpa_supplicant
Change-Id: I16ec62b0f46b05cbc4e254f12a51a26320b9df30
1 file changed