Remove door terrains that were supposed to be removed by 1.14

If someone was using these despite being hidden and everything they were
really asking to get shot in the foot at some point.

changelog.md

@@ -10,6 +10,9 @@
    * List boxes (MP lobby game list in particular) now keep the scroll position
      when they change, instead of keeping the selected item visible (issue #3016).
    * Fixed MP lobby player list scrolling to top when it changes
+ ### Terrains
+   * Removed hidden terrains that were not supposed to make it to 1.14: ^Prg,
+     ^Prgo, ^Pwd, ^Pwdo
  ### Miscellaneous and bug fixes
    * Fixed: unit halo remained after undoing a recall (issue #3065)
    * [change_theme] no longer causes a Lua error when theme= is not specified

data/core/terrain-graphics.cfg

@@ -433,12 +433,6 @@ C*,K*,X*,Q*,W*,Ai,M*,*^V*,*^B*,_off^_usr#enddef
 {GATES_DIAGONAL_SW_L 		(*^Pw\o)	(X*)	0 	() 	portals/door-wooden-open}
 {GATES_DIAGONAL_SE_L 		(*^Pw/o)	(X*)	0 	() 	portals/door-wooden-open}
 
-# Simple dummy tiles for obsolete terrain codes
-{NEW:OVERLAY (*^Prg) portals/gate-rusty-long-n}
-{NEW:OVERLAY (*^Prgo) portals/gate-rusty-open-long-n}
-{NEW:OVERLAY (*^Pwd) portals/door-wooden-long-n}
-{NEW:OVERLAY (*^Pwdo) portals/door-wooden-open-long-n}
-
 
 #
 #       >  B A S E   T E R R A I N S  <

data/core/terrain.cfg

@@ -1400,69 +1400,6 @@ Occasionally caves are <ref>dst='terrain_illuminated_cave' text='illuminated'</r
     hide_help=yes
 [/terrain_type]
 
-#
-#    ## Previous directionless gate terrains (for backwards compatibility) ##
-#    ## Should be removed by BfW 1.14.0
-#
-
-[terrain_type]
-    symbol_image=void/void
-    editor_image=portals/gate-rusty-long-se
-    id=portal_gate_rusty
-    name= _ "Gate"
-    editor_name= _ "Rusty Gate"
-    string=^Prg
-    default_base=Rr
-    aliasof=_bas,Xt
-    mvt_alias=Xt
-    editor_group=embellishments,obstacle
-    hidden=yes
-    hide_help=yes
-[/terrain_type]
-
-[terrain_type]
-    symbol_image=void/void
-    editor_image=portals/door-wooden-long-se
-    id=portal_door_wooden
-    name= _ "Door"
-    editor_name= _ "Wooden Door"
-    string=^Pwd
-    default_base=Rr
-    aliasof=_bas,Xt
-    mvt_alias=Xt
-    editor_group=embellishments,obstacle
-    hidden=yes
-    hide_help=yes
-[/terrain_type]
-
-[terrain_type]
-    symbol_image=void/void
-    editor_image=portals/gate-rusty-open-long-se
-    id=p_open_rusty
-    name= _ "Gate"
-    editor_name= _ "Rusty Open Gate"
-    string=^Prgo
-    default_base=Rr
-    aliasof=_bas
-    editor_group=embellishments
-    hidden=yes
-    hide_help=yes
-[/terrain_type]
-
-[terrain_type]
-    symbol_image=void/void
-    editor_image=portals/door-wooden-open-long-se
-    id=p_open_wooden
-    name= _ "Door"
-    editor_name= _ "Wooden Open Door"
-    string=^Pwdo
-    default_base=Rr
-    aliasof=_bas
-    editor_group=embellishments
-    hidden=yes
-    hide_help=yes
-[/terrain_type]
-
 #
 #    ## Invisible obstacle overlays ##
 #