[migration] Removes reference to 10TC media

migration/cta-catalogue-initialise.sh

@@ -17,12 +17,11 @@ cta-admin virtualorganization add --vo "nTOF"    --comment "nTOF"
 # Other SME experiments
 cta-admin virtualorganization add --vo "NA62"    --comment "NA62"
 
-# Media types as discovered from CASTOR (16/06/2020)
+# Media types as discovered from CASTOR (17/06/2020)
 #   SQL> select unique density from vmgr_tape_info;
 #
 #   DENSITY
 #   --------
-#   10TC
 #   20TC
 #   15TC
 #   9TC