FP3: wifi: Remove hostapd hidl entry from manifest.xml

This CL removes the definition for the hostapd hidl interface from
manifest.xml and rely on vint-fragements entry.
This is to avoid the need to modify the revision in future

Bug: 145780363
Test: builds and wifi softap works
Change-Id: I2a9cb25209efc94f6306f38d89cb5e1ff6f72bed