gdb/dwarf2: remove unused includes

Remove some includes reported as unused by clangd.

Change-Id: I841938c3c6254e4f0d154a1e172c4968ff326333

gdb/dwarf2/cooked-index.c

@@ -20,14 +20,10 @@
 #include "dwarf2/cooked-index.h"
 #include "dwarf2/read.h"
 #include "dwarf2/stringify.h"
-#include "dwarf2/index-cache.h"
 #include "event-top.h"
-#include "split-name.h"
 #include "observable.h"
 #include "run-on-main-thread.h"
-#include <algorithm>
 #include "gdbsupport/task-group.h"
-#include <chrono>
 #include "cli/cli-cmds.h"
 
 /* We don't want gdb to exit while it is in the process of writing to

gdb/dwarf2/cooked-index.h

@@ -20,19 +20,14 @@
 #ifndef GDB_DWARF2_COOKED_INDEX_H
 #define GDB_DWARF2_COOKED_INDEX_H
 
-#include "dwarf2.h"
 #include "dwarf2/cooked-index-entry.h"
-#include "dwarf2/types.h"
 #include "symtab.h"
-#include "hashtab.h"
 #include "quick-symbol.h"
-#include "gdbsupport/gdb_obstack.h"
 #include "addrmap.h"
 #include "dwarf2/mapped-index.h"
 #include "dwarf2/read.h"
 #include "dwarf2/parent-map.h"
 #include "gdbsupport/range-chain.h"
-#include "complaints.h"
 #include "dwarf2/cooked-index-shard.h"
 #include "dwarf2/cooked-index-worker.h"
 

gdb/dwarf2/cooked-indexer.h

@@ -20,7 +20,7 @@
 #ifndef GDB_DWARF2_COOKED_INDEXER_H
 #define GDB_DWARF2_COOKED_INDEXER_H
 
-#include "dwarf2/cooked-index.h"
+#include "dwarf2/cooked-index-entry.h"
 #include "dwarf2/parent-map.h"
 #include "dwarf2/types.h"
 #include <variant>

gdb/dwarf2/parent-map.c

@@ -17,7 +17,7 @@
    You should have received a copy of the GNU General Public License
    along with this program.  If not, see <http://www.gnu.org/licenses/>.  */
 
-#include "dwarf2/cooked-index.h"
+#include "dwarf2/cooked-index-entry.h"
 #include "dwarf2/read.h"
 #include "dwarf2/parent-map.h"