utils: Remove format_xplmn leading zeros in MNC

Change-Id: I803edafbd892c2b32b884d0b39fed61967a3d68b
diff --git a/pysim-testdata/sysmoISIM-SJA2.ok b/pysim-testdata/sysmoISIM-SJA2.ok
index f9476df..45acd79 100644
--- a/pysim-testdata/sysmoISIM-SJA2.ok
+++ b/pysim-testdata/sysmoISIM-SJA2.ok
@@ -103,7 +103,7 @@
 	Service 59 - MMS User Connectivity Parameters
 
 EHPLMN:
-	00f110 # MCC: 001 MNC: 001
+	00f110 # MCC: 001 MNC: 01
 	ffffff # unused
 	ffffff # unused
 	ffffff # unused