runtime: Remove more fallback :CompilerSet definitions from compiler plugins (#14413)

Continue with #14399

Signed-off-by: jiangyinzuo <jiangyinzuo@foxmail.com>
Signed-off-by: Doug Kearns <dougkearns@gmail.com>
Signed-off-by: Christian Brabandt <cb@256bit.org>
diff --git a/runtime/compiler/hare.vim b/runtime/compiler/hare.vim
index 5bece78..c98bbb9 100644
--- a/runtime/compiler/hare.vim
+++ b/runtime/compiler/hare.vim
@@ -2,7 +2,7 @@
 " Compiler: Hare Compiler
 " Maintainer: Amelia Clarke <me@rsaihe.dev>
 " Last Change: 2022-09-21
-"		2024 Apr 03 by The Vim Project (removed :CompilerSet definition)
+"              2024 Apr 05 by The Vim Project (removed :CompilerSet definition)
 
 if exists("g:current_compiler")
   finish
@@ -12,10 +12,6 @@
 let s:cpo_save = &cpo
 set cpo&vim
 
-if exists(':CompilerSet') != 2
-  command -nargs=* CompilerSet setlocal <args>
-endif
-
 if filereadable("Makefile") || filereadable("makefile")
   CompilerSet makeprg=make
 else