Remove "set default sim" string because option no longer available

Removed "set_default_sim" string from code in a previous change. Now
removing just the string.

Bug: 15644935
Change-Id: I678f47e7386c357922eb444ac29701ad7d680887
1 file changed
tree: d58ebbe351bac5094cb02d0f71700c510dbfc1be
  1. res-common/
  2. src/
  3. tests/