widl: Remove unused headers.

tools/widl/client.c

@@ -25,9 +25,7 @@
 #include <stdlib.h>
 #include <unistd.h>
 #include <string.h>
-#include <assert.h>
 #include <ctype.h>
-#include <signal.h>
 
 #include "widl.h"
 #include "utils.h"

tools/widl/header.c

@@ -27,9 +27,7 @@
 # include <unistd.h>
 #endif
 #include <string.h>
-#include <assert.h>
 #include <ctype.h>
-#include <signal.h>
 
 #include "widl.h"
 #include "utils.h"

tools/widl/proxy.c

@@ -28,9 +28,7 @@
 # include <unistd.h>
 #endif
 #include <string.h>
-#include <assert.h>
 #include <ctype.h>
-#include <signal.h>
 
 #include "widl.h"
 #include "utils.h"

tools/widl/server.c

@@ -27,9 +27,7 @@
 # include <unistd.h>
 #endif
 #include <string.h>
-#include <assert.h>
 #include <ctype.h>
-#include <signal.h>
 
 #include "widl.h"
 #include "utils.h"

tools/widl/typegen.c

@@ -30,7 +30,6 @@
 #include <string.h>
 #include <assert.h>
 #include <ctype.h>
-#include <signal.h>
 #include <limits.h>
 
 #include "widl.h"

tools/widl/typelib.c

@@ -28,9 +28,7 @@
 #include <stdarg.h>
 #include <unistd.h>
 #include <string.h>
-#include <assert.h>
 #include <ctype.h>
-#include <signal.h>
 
 #define NONAMELESSUNION
 #define NONAMELESSSTRUCT