gdb: remove unused includes in break-*.c

These are reported as unused by clangd.

Change-Id: I80871e08b9d29c540f61d6ea91904197faf92065

gdb/break-catch-load.c

@@ -22,7 +22,6 @@
 #include "arch-utils.h"
 #include "breakpoint.h"
 #include "cli/cli-decode.h"
-#include "mi/mi-common.h"
 #include "progspace.h"
 #include "solib.h"
 #include "target.h"

gdb/break-catch-sig.c

@@ -18,9 +18,7 @@
    along with this program.  If not, see <http://www.gnu.org/licenses/>.  */
 
 #include "arch-utils.h"
-#include <ctype.h>
 #include "breakpoint.h"
-#include "cli/cli-cmds.h"
 #include "inferior.h"
 #include "infrun.h"
 #include "annotate.h"

gdb/break-catch-syscall.c

@@ -19,7 +19,6 @@
 
 #include <ctype.h>
 #include "breakpoint.h"
-#include "cli/cli-cmds.h"
 #include "inferior.h"
 #include "cli/cli-utils.h"
 #include "annotate.h"

gdb/break-catch-throw.c

@@ -25,12 +25,8 @@
 #include "annotate.h"
 #include "valprint.h"
 #include "cli/cli-utils.h"
-#include "completer.h"
-#include "gdbsupport/gdb_obstack.h"
 #include "mi/mi-common.h"
-#include "linespec.h"
 #include "probe.h"
-#include "objfiles.h"
 #include "cp-abi.h"
 #include "gdbsupport/gdb_regex.h"
 #include "cp-support.h"

gdb/break-cond-parse.c

@@ -23,7 +23,6 @@
 #include "break-cond-parse.h"
 #include "tid-parse.h"
 #include "ada-lang.h"
-#include "exceptions.h"
 
 /* When parsing tokens from a string, which direction are we parsing?