Revert "Bug 1094185 - [DSDS] Make testvars.json handle 2 SIMs"

This reverts commit 720389fd133ba152d907c4ff7796355f7719b821.
Bug 1094185 - [DSDS] Make testvars.json handle 2 SIMs
Merge pull request #26007 from JohanLorenzo/bug-1094185-master-second-try

Bug 1094185 - [DSDS] Make testvars.json handle 2 SIMs