Remove submarines for the time being.

They definitely feel too much like placeholders at this point.
They should be removed until they're in a better state.

https://forums.eagle.ru/topic/251238-submarines is a good read on the topic.

resources/factions/iran_2015.json

@@ -81,8 +81,7 @@
   "missiles_group_count": 1,
   "navy_generators": [
     "GrishaGroupGenerator",
-    "MolniyaGroupGenerator",
-    "KiloSubGroupGenerator"
+    "MolniyaGroupGenerator"
   ],
   "has_jtac": true,
   "jtac_unit": "MQ_9_Reaper"

resources/factions/poland_2010.json

@@ -51,7 +51,6 @@
   "carrier_names": [],
   "navy_generators": [
     "MolniyaGroupGenerator",
-    "KiloSubGroupGenerator",
     "OliverHazardPerryGroupGenerator"
   ]
 }

resources/factions/russia_1975.json

@@ -78,7 +78,7 @@
   "carrier_names": [
   ],
   "navy_generators": [
-    "KiloSubGroupGenerator", "MolniyaGroupGenerator"
+    "MolniyaGroupGenerator"
   ],
   "has_jtac": false,
   "doctrine": "coldwar"

resources/factions/russia_1990.json

@@ -89,8 +89,7 @@
     "Admiral Gorshkov"
   ],
   "navy_generators": [
-    "RussianNavyGroupGenerator",
-    "KiloSubGroupGenerator"
+    "RussianNavyGroupGenerator"
   ],
   "has_jtac": true,
   "jtac_unit": "MQ_9_Reaper"

resources/factions/russia_2010.json

@@ -91,8 +91,7 @@
     "Admiral Kuznetov"
   ],
   "navy_generators": [
-    "RussianNavyGroupGenerator",
-    "KiloSubGroupGenerator"
+    "RussianNavyGroupGenerator"
   ],
   "has_jtac": true,
   "jtac_unit": "MQ_9_Reaper"

resources/factions/russia_2020.json

@@ -89,8 +89,7 @@
     "Admiral Kuznetov"
   ],
   "navy_generators": [
-    "RussianNavyGroupGenerator",
-    "KiloSubGroupGenerator"
+    "RussianNavyGroupGenerator"
   ],
   "has_jtac": true,
   "jtac_unit": "MQ_9_Reaper"