kconfig: remove orphan lookup_file() declaration

There is no definition, no caller for lookup_file().

Signed-off-by: Masahiro Yamada <masahiroy@kernel.org>

diff --git a/scripts/kconfig/expr.h b/scripts/kconfig/expr.h
index 4a9a23b1b7e1f91315f17675685d11dd97c4aa4d..e0d8665691550abb270a6592a8fd428cbb9036e0 100644 (file)
--- a/scripts/kconfig/expr.h
+++ b/scripts/kconfig/expr.h
@@ -279,7 +279,6 @@ struct jump_key {
 
 extern struct file *file_list;
 extern struct file *current_file;
-struct file *lookup_file(const char *name);
 
 extern struct symbol symbol_yes, symbol_no, symbol_mod;
 extern struct symbol *modules_sym;