[gcc r16-8198] gccrs: Remove unused function

[Arthur Cohen]

https://gcc.gnu.org/g:ea66f8aaee8cdc0ab145178f6d10f5c4cb46f0a6

commit r16-8198-gea66f8aaee8cdc0ab145178f6d10f5c4cb46f0a6
Author: Pierre-Emmanuel Patry <pierre-emmanuel.patry@embecosm.com>
Date:   Wed Feb 4 23:38:13 2026 +0100

    gccrs: Remove unused function
    
    gcc/rust/ChangeLog:
    
            * expand/rust-cfg-strip.cc (CfgStrip::fails_cfg): Remove function.
            * expand/rust-cfg-strip.h: Remove function prototype.
    
    Signed-off-by: Pierre-Emmanuel Patry <pierre-emmanuel.patry@embecosm.com>

Diff:
---
 gcc/rust/expand/rust-cfg-strip.cc | 21 ---------------------
 gcc/rust/expand/rust-cfg-strip.h  |  2 --
 2 files changed, 23 deletions(-)

diff --git a/gcc/rust/expand/rust-cfg-strip.cc b/gcc/rust/expand/rust-cfg-strip.cc
index 071104036f79..59cec98af6c1 100644
--- a/gcc/rust/expand/rust-cfg-strip.cc
+++ b/gcc/rust/expand/rust-cfg-strip.cc
@@ -26,27 +26,6 @@
 
 namespace Rust {
 
-/**
- * Determines whether any cfg predicate is false and hence item with attributes
- * should be stripped. Note that attributes must be expanded before calling.
- */
-bool
-CfgStrip::fails_cfg (const AST::AttrVec &attrs) const
-{
-  auto &session = Session::get_instance ();
-
-  for (const auto &attr : attrs)
-    {
-      if (attr.get_path () == Values::Attributes::CFG
-	  && !attr.check_cfg_predicate (session))
-	return true;
-      else if (!expansion_cfg.should_test
-	       && attr.get_path () == Values::Attributes::TEST)
-	return true;
-    }
-  return false;
-}
-
 /**
  * Determines whether any cfg predicate is false and hence item with attributes
  * should be stripped. Will expand attributes as well.
diff --git a/gcc/rust/expand/rust-cfg-strip.h b/gcc/rust/expand/rust-cfg-strip.h
index ace70af2b0bb..dfe724a778fa 100644
--- a/gcc/rust/expand/rust-cfg-strip.h
+++ b/gcc/rust/expand/rust-cfg-strip.h
@@ -31,8 +31,6 @@ struct ExpansionCfg;
 class CfgStrip : public AST::DefaultASTVisitor
 {
 private:
-  bool fails_cfg (const AST::AttrVec &attrs) const;
-
   bool fails_cfg_with_expand (AST::AttrVec &attrs) const;
 
 public: