drop deprecation rules which have today very few (<10) occurances

These have either been fixed/cleaned up in the meantime or were very rare from the start.

data/deprecated.json

@@ -550,10 +550,6 @@
     "old": {"drinkable": "*"},
     "replace": {"drinking_water": "$1"}
   },
-  {
-    "old": {"dropped_kerb": "*"},
-    "replace": {"kerb": "lowered"}
-  },
   {
     "old": {"embankment": "1"},
     "replace": {"embankment": "yes"}
@@ -946,14 +942,6 @@
     "old": {"levels": "*"},
     "replace": {"building:levels": "$1"}
   },
-  {
-    "old": {"LEVELS": "*"},
-    "replace": {"building:levels": "$1"}
-  },
-  {
-    "old": {"levels_count": "*"},
-    "replace": {"building:levels": "$1"}
-  },
   {
     "old": {"man_made": "cut_line"},
     "replace": {"man_made": "cutline"}
@@ -1086,10 +1074,6 @@
     "old": {"NOTE": "*"},
     "replace": {"note": "$1"}
   },
-  {
-    "old": {"nosquare": "*"},
-    "replace": {"nonsquare": "$1"}
-  },
   {
     "old": {"office": "administrative"},
     "replace": {"office": "government"}
@@ -1291,10 +1275,6 @@
     "old": {"religion": "catholic"},
     "replace": {"religion": "christian", "denomination": "catholic"}
   },
-  {
-    "old": {"reservations": "*"},
-    "replace": {"reservation": "$1"}
-  },
   {
     "old": {"roof:color": "*"},
     "replace": {"roof:colour": "$1"}
@@ -1307,10 +1287,6 @@
     "old": {"route": "ncn"},
     "replace": {"route": "bicycle", "network": "ncn"}
   },
-  {
-    "old": {"rwn_expected_route_relations": "*"},
-    "replace": {"expected_rwn_route_relations": "$1"}
-  },
   {
     "old": {"service": "drive_through"},
     "replace": {"service": "drive-through"}
@@ -1459,10 +1435,6 @@
     "old": {"shop": "winery"},
     "replace": {"craft": "winery"}
   },
-  {
-    "old": {"showers": "*"},
-    "replace": {"shower": "$1"}
-  },
   {
     "old": {"sloped_curb": "0"},
     "replace": {"kerb": "flush"}
@@ -1507,22 +1479,6 @@
     "old": {"sloped_curb": "yes"},
     "replace": {"kerb": "lowered"}
   },
-  {
-    "old": {"speed_limit": "*"},
-    "replace": {"maxspeed": "$1"}
-  },
-  {
-    "old": {"speedlimit": "*"},
-    "replace": {"maxspeed": "$1"}
-  },
-  {
-    "old": {"SpeedLimit": "*"},
-    "replace": {"maxspeed": "$1"}
-  },
-  {
-    "old": {"SPEEDLIMIT": "*"},
-    "replace": {"maxspeed": "$1"}
-  },
   {
     "old": {"sport": "horse_shoes"},
     "replace": {"sport": "horseshoes"}