Remove expand_symtabs_matching

The last caller of the global expand_symtabs_matching function has
been changed, so now we can remove this function.

Acked-By: Simon Marchi <simon.marchi@efficios.com>

gdb/symfile.c

diff --git a/gdb/symfile.c b/gdb/symfile.c
index 15e9ed3..98cb637 100644
--- a/gdb/symfile.c
+++ b/gdb/symfile.c
@@ -3755,31 +3755,6 @@ symfile_free_objfile (struct objfile *objfile)
   objfile->pspace ()->remove_target_sections (objfile);
 }
 
-/* Wrapper around the quick_symbol_functions expand_symtabs_matching "method".
-   Expand all symtabs that match the specified criteria.
-   See quick_symbol_functions.expand_symtabs_matching for details.  */
-
-bool
-expand_symtabs_matching (expand_symtabs_file_matcher file_matcher,
-			 const lookup_name_info &lookup_name,
-			 expand_symtabs_symbol_matcher symbol_matcher,
-			 expand_symtabs_expansion_listener expansion_notify,
-			 block_search_flags search_flags,
-			 domain_search_flags domain,
-			 expand_symtabs_lang_matcher lang_matcher)
-{
-  for (objfile *objfile : current_program_space->objfiles ())
-    if (!objfile->expand_symtabs_matching (file_matcher,
-					   &lookup_name,
-					   symbol_matcher,
-					   expansion_notify,
-					   search_flags,
-					   domain,
-					   lang_matcher))
-      return false;
-  return true;
-}
-
 /* Wrapper around the quick_symbol_functions map_symbol_filenames "method".
    Map function FUN over every file.
    See quick_symbol_functions.map_symbol_filenames for details.  */

gdb/symfile.h

diff --git a/gdb/symfile.h b/gdb/symfile.h
index ee9bc11..06509a6 100644
--- a/gdb/symfile.h
+++ b/gdb/symfile.h
@@ -345,15 +345,6 @@ symfile_segment_data_up get_symfile_segment_data (bfd *abfd);
 
 extern scoped_restore_tmpl<int> increment_reading_symtab (void);
 
-bool expand_symtabs_matching
-  (expand_symtabs_file_matcher file_matcher,
-   const lookup_name_info &lookup_name,
-   expand_symtabs_symbol_matcher symbol_matcher,
-   expand_symtabs_expansion_listener expansion_notify,
-   block_search_flags search_flags,
-   domain_search_flags kind,
-   expand_symtabs_lang_matcher lang_matcher = nullptr);
-
 void map_symbol_filenames (symbol_filename_listener fun, bool need_fullname);
 
 /* Target-agnostic function to load the sections of an executable into memory.