nr2.0: Update IdentifierPattern's subpattern name resolution

gcc/rust/ChangeLog:

	* resolve/rust-late-name-resolver-2.0.cc (Late::visit(IdentifierPattern)):
	Remove redundant subpattern check.

Signed-off-by: Yap Zhi Heng <yapzhhg@gmail.com>

Author: Polygonalr

gcc/rust/resolve/rust-late-name-resolver-2.0.cc

@@ -251,10 +251,7 @@ visit_identifier_as_pattern (NameResolutionContext &ctx,
 void
 Late::visit (AST::IdentifierPattern &identifier)
 {
-  if (identifier.has_subpattern ())
-    {
-      DefaultResolver::visit (identifier.get_subpattern ());
-    }
+  DefaultResolver::visit (identifier);
 
   visit_identifier_as_pattern (ctx, identifier.get_ident (),
 			       identifier.get_locus (),