Cleanup SUPL network request parameters for requestRouteToHostAddress

This is a follow up CL to address a comment for Patch Set 4 in CL
ag/6957177. Some parameters set in the SUPL network request for
ConnectivtyService to support the deprecated requestRouteToHostAddress()
method for pre-gnss@2.0 HALs are not actually needed and the code
can be simplified.

Fixes: 121222025
Test: Verified on a Pixel device with gnss@1.1 HAL.
Change-Id: If894e9db8d39f43644fd7dfbb4421f493d3d24e6