Revert "chore: use iwyu on geometry/**.cpp"

This reverts commit 740bd65.

Author: realstealthninja

geometry/line_segment_intersection.cpp

@@ -3,9 +3,8 @@
  * @brief check whether two line segments intersect each other
  * or not.
  */
-#include <stdio.h>    // for printf
-#include <algorithm>  // for max, min
-#include <iostream>   // for basic_istream::operator>>, char_traits, basic_i...
+#include <algorithm>
+#include <iostream>
 
 /**
  * Define a Point.