fix expectations of TC_lu_imsi_reject and TC_lu_imsi_timeout_gsup

These tests were expecting two ClearCommands, but the MSC will
only send one. Remove redundant calls to f_expect_clear() outside
of the alt step. The expected ClearCommand is received inside the
alt step.

Change-Id: I77f189d9050a06fe6eac457312285cf173c842d5
1 file changed