library/Osmocom_Types: fix: '10111111'B is a valid emergency RA

Most likely, the second part of the condition was copy-pasted
from ra_is_ps(), where the specs. require that at least one
of the three LSB's shall be zero.  This requirement does not
apply to emergency RA values in range '101xxxxx'B.

Change-Id: I4c923682edfeee9c6bf3aeeeb67438809a54109f
diff --git a/library/Osmocom_Types.ttcn b/library/Osmocom_Types.ttcn
index 2ee3215..fa36881 100644
--- a/library/Osmocom_Types.ttcn
+++ b/library/Osmocom_Types.ttcn
@@ -208,10 +208,7 @@
 
 function ra_is_emerg(OCT1 ra) return boolean {
 	/* See also: 3GPP TS 04.08, Table 9.9, ra=101xxxxx */
-	if ((ra and4b 'E0'O == 'A0'O) and (ra and4b '1F'O != '1F'O)) {
-		return true;
-	}
-	return false;
+	return (ra and4b 'E0'O == 'A0'O);
 }
 
 /* generate a random RACH for circuit-switched */