disable LAUNCH_BROWSER for sprint

LAUNCH BROWSER STK command needs to be disabled
as sprint would not want the default behavior.

Test: Swapped the sprint sim cards and verified
that browser launch do not happen

Merged-in:I2cc1978cceca914087399b70cefe78dc62e5c3c5
BUG=31257758

Change-Id: I2cc1978cceca914087399b70cefe78dc62e5c3c5
1 file changed