fix(doc): remove :promptfind and :promptrepl

:promptfind and :promptrepl are N/A for Nvim.

runtime/doc/change.txt

@@ -913,22 +913,7 @@ This replaces an end-of-line with a new line containing the value of $HOME. >
 This replaces each 'E' character with a euro sign.  Read more in |<Char->|.
 
 
-4.3 Search and replace					*search-replace*
+4.3 Changing tabs					*change-tabs*
-
-							*:pro* *:promptfind*
-:promptf[ind] [string]
-			Put up a Search dialog.  When [string] is given, it is
-			used as the initial search string.
-			{only for Win32 GUI}
-
-						*:promptr* *:promptrepl*
-:promptr[epl] [string]
-			Put up a Search/Replace dialog.  When [string] is
-			given, it is used as the initial search string.
-			{only for Win32 GUI}
-
-
-4.4 Changing tabs					*change-tabs*
 							*:ret* *:retab* *:retab!*
 :[range]ret[ab][!] [new_tabstop]
 			Replace all sequences of white-space containing a

runtime/doc/cmdline.txt

@@ -532,7 +532,6 @@ that see the '"' as part of their argument:
     :normal
     :ownsyntax
     :popup
-    :promptfind (and the like)
     :registers
     :return
     :sort
@@ -571,8 +570,6 @@ followed by another Vim command:
     :make
     :normal
     :perlfile
-    :promptfind
-    :promptrepl
     :pyfile
     :python
     :registers

runtime/doc/index.txt

@@ -1457,8 +1457,6 @@ tag		command		action ~
 |:print|	:p[rint]	print lines
 |:profdel|	:profd[el]	stop profiling a function or script
 |:profile|	:prof[ile]	profiling functions and scripts
-|:promptfind|	:pro[mptfind]	open GUI dialog for searching
-|:promptrepl|	:promptr[epl]	open GUI dialog for search/replace
 |:pop|		:po[p]		jump to older entry in tag stack
 |:popup|	:popu[p]	popup a menu by name
 |:ppop|		:pp[op]		":pop" in preview window

runtime/doc/vim_diff.txt

@@ -421,6 +421,8 @@ Commands:
   :mode (no longer accepts an argument)
   :open
   :Print
+  :promptfind
+  :promptrepl
   :shell
   :smile
   :tearoff