Remove unused headers

With help from
https://github.com/include-what-you-use/include-what-you-use/

src/click.c

@@ -9,12 +9,8 @@
  */
 #include "all.h"
 
-#include <math.h>
 #include <time.h>
 
-#include <X11/XKBlib.h>
-#include <xcb/xcb_icccm.h>
-
 typedef enum { CLICK_BORDER = 0,
                CLICK_DECORATION = 1,
                CLICK_INSIDE = 2 } click_destination_t;

src/commands.c

@@ -11,8 +11,6 @@
 #include "shmlog.h"
 
 #include <fcntl.h>
-#include <float.h>
-#include <stdarg.h>
 #include <stdint.h>
 #include <unistd.h>
 

src/commands_parser.c

@@ -25,13 +25,6 @@
  */
 #include "all.h"
 
-#include <stdbool.h>
-#include <stdint.h>
-#include <stdio.h>
-#include <stdlib.h>
-#include <string.h>
-#include <unistd.h>
-
 // Macros to make the YAJL API a bit easier to use.
 #define y(x, ...) (command_output.json_gen != NULL ? yajl_gen_##x(command_output.json_gen, ##__VA_ARGS__) : 0)
 #define ystr(str) (command_output.json_gen != NULL ? yajl_gen_string(command_output.json_gen, (unsigned char *)str, strlen(str)) : 0)

src/config_directives.c

@@ -9,9 +9,6 @@
  */
 #include "all.h"
 
-#include <float.h>
-#include <stdarg.h>
-
 /*******************************************************************************
  * Criteria functions.
  ******************************************************************************/

src/display_version.c

@@ -11,11 +11,6 @@
 #include "all.h"
 
 #include <fcntl.h>
-#include <sys/socket.h>
-#include <sys/stat.h>
-#include <sys/types.h>
-#include <sys/un.h>
-#include <sys/wait.h>
 #include <time.h>
 
 static bool human_readable_key, loaded_config_file_name_key;

src/handlers.c

@@ -10,7 +10,6 @@
  */
 #include "all.h"
 
-#include <float.h>
 #include <sys/time.h>
 #include <time.h>
 

src/load_layout.c

@@ -10,10 +10,7 @@
  */
 #include "all.h"
 
-#include <yajl/yajl_common.h>
-#include <yajl/yajl_gen.h>
 #include <yajl/yajl_parse.h>
-#include <yajl/yajl_version.h>
 
 /* TODO: refactor the whole parsing thing */
 

src/main.c

@@ -13,6 +13,7 @@
 #include <ev.h>
 #include <fcntl.h>
 #include <libgen.h>
+#include <signal.h>
 #include <sys/mman.h>
 #include <sys/resource.h>
 #include <sys/socket.h>

src/manage.c

@@ -8,9 +8,6 @@
  *
  */
 #include "all.h"
-#include "yajl_utils.h"
-
-#include <yajl/yajl_gen.h>
 
 /*
  * Match frame and window depth. This is needed because X will refuse to reparent a

src/sighandler.c

@@ -7,14 +7,9 @@
  */
 #include "all.h"
 
-#include <ev.h>
-#include <iconv.h>
 #include <signal.h>
 #include <sys/wait.h>
 
-#include <X11/keysym.h>
-#include <xcb/xcb_event.h>
-
 typedef struct dialog_t {
     xcb_window_t id;
     xcb_colormap_t colormap;

src/util.c

@@ -10,7 +10,6 @@
  */
 #include "all.h"
 
-#include <stdarg.h>
 #include <sys/wait.h>
 #if defined(__OpenBSD__)
 #include <sys/cdefs.h>
@@ -18,12 +17,6 @@
 #include <ctype.h>
 #include <fcntl.h>
 #include <libgen.h>
-#include <pwd.h>
-
-#include <yajl/yajl_version.h>
-
-#define SN_API_NOT_YET_FROZEN 1
-#include <libsn/sn-launcher.h>
 
 int min(int a, int b) {
     return (a < b ? a : b);