Revert "Add Default SIM name if offhost name is not specified in xml."

This reverts commit bad0c021.

Reason for revert: Fix for b/412807168 CTS test failure

Bug: 412807168
Bug: 412556522
Test: Manual
Flag: EXEMPT bug fix
Change-Id: I84031f2981e78c0d337377edad6ffc60a2740244