[lldb][gmodules] Fix TestDataFormatterGlobals under gmodules

Same reason as in 548dbfaf447cc5fdfc26d34e60e3da08eb609531 -> macOS has a
struct called 'Point' in the libc module. Just remove the redundant includes
here.

Author: Teemperor

lldb/test/API/functionalities/data-formatter/data-formatter-globals/main.cpp

@@ -1,7 +1,3 @@
-#include <stdio.h>
-#include <stdlib.h>
-#include <stdint.h>
-
 struct Point {
     int x;
     int y;