runtime(compiler): Remove version check in rustc compiler

closes: #18347

Signed-off-by: Konfekt <[email protected]>
Signed-off-by: Christian Brabandt <[email protected]>

Author: Konfekt

runtime/compiler/rustc.vim

@@ -2,6 +2,7 @@
 " Compiler:         Rust Compiler
 " Maintainer:       Chris Morgan <[email protected]>
 " Latest Revision:  2023-09-11
+" 2025 Nov 15 by Vim project: remove test for Vim patch 7.4.191
 " For bugs, patches and license go to https://github.com/rust-lang/rust.vim
 
 if exists("current_compiler")
@@ -17,11 +18,7 @@ set cpo&vim
 if get(g:, 'rustc_makeprg_no_percent', 0)
     CompilerSet makeprg=rustc
 else
-    if has('patch-7.4.191')
-      CompilerSet makeprg=rustc\ \%:S
-    else
-      CompilerSet makeprg=rustc\ \"%\"
-    endif
+    CompilerSet makeprg=rustc\ \%:S
 endif
 
 " New errorformat (after nightly 2016/08/10)