cosmetic: drop redundant assignment in f_TC_rach_content

Change-Id: I3b0f3df6c01642a84610f213f4682e330e12c068
diff --git a/bts/BTS_Tests.ttcn b/bts/BTS_Tests.ttcn
index d9701ae..a9e464a 100644
--- a/bts/BTS_Tests.ttcn
+++ b/bts/BTS_Tests.ttcn
@@ -1484,7 +1484,7 @@
 	var GsmFrameNumber fn_last := 0;
 	var boolean test_failed := false;
 	for (var integer i := 0; i < 1000; i := i+1) {
-		var OCT1 ra := f_rnd_ra_emerg();
+		var OCT1 ra;
 		if (emerg == true) {
 			ra := f_rnd_ra_emerg();
 		} else {