bts: Fix trailing whitespace

Change-Id: I5164212fee7e94bc98f65e60d00ccd77b4d9e01d
diff --git a/bts/BTS_Tests.ttcn b/bts/BTS_Tests.ttcn
index e3d4beb..8a297fb 100644
--- a/bts/BTS_Tests.ttcn
+++ b/bts/BTS_Tests.ttcn
@@ -2720,7 +2720,7 @@
 	Misc_Helpers.f_shutdown(__BFILE__, __LINE__);
 }
 
-/* establish DChan, verify that the BTS sets the TA in the first SACCH L1 header. 
+/* establish DChan, verify that the BTS sets the TA in the first SACCH L1 header.
 TA for the IMM ASS messages is still controlled by g_pars.l1_pars.ms_actual_ta! */
 function f_tc_rsl_chan_initial_ta(charstring id) runs on ConnHdlr {
 	var L1ctlDlMessage l1_dl;