BTS_Tests: cosmetic: use setverdict() in f_sacch_{present,missing}()

This eliminates the need for using log2str() and improves readability.

Change-Id: Iaf9b03fb81ec4fa2ca4f0a0b2f0b50491c6a9d80
Related: SYS#5838, OS#4008, OS#4009
1 file changed