library/GSM_RR_Types: do not duplicate Mobile Identity records

All the records related to Mobile Identity IE (see 3GPP TS 24.008,
section 10.5.1.4) are defined in [1], so there is no real need to
dumplicate them. Moreover, most of the related templates in
library/L3_Templates.ttcn are based on these records.

[1] titan.ProtocolModules.MobileL3_v13.4.0/src/MobileL3_CommonIE_Types.ttcn

Change-Id: I27c2743c59db770d6f7e9447dc8c1f539b228ced
diff --git a/pcu/PCU_Tests_RAW.ttcn b/pcu/PCU_Tests_RAW.ttcn
index 62ebcd6..6e11889 100644
--- a/pcu/PCU_Tests_RAW.ttcn
+++ b/pcu/PCU_Tests_RAW.ttcn
@@ -1386,7 +1386,7 @@
 	var RlcmacDlBlock dl_block;
 	var boolean ok;
 	var OCT4 tlli := '00000001'O;
-	var MobileL3_CommonIE_Types.MobileIdentityLV mi;
+	var MobileIdentityLV mi;
 	var octetstring mi_enc_lv;
 	var hexstring imsi := f_gen_imsi(42);