Refactoring

Cleaned up a project, removed uneccessary includes.
Fixed few errors, nothing major.

tests/src/rse_graphics_tests.c

@@ -1,10 +1,6 @@
 #include "criterion/criterion.h"
 #include "graphics/src/rse_math.h"
 
-
-#include <stdio.h>
-#include <math.h>
-
 /*-----------------RSE MATH TEST------------------------*/
 
 TestSuite(rse_math);
@@ -177,10 +173,11 @@ Test(rse_math, perspective)
 }
 
 /*-----------------RSE TEXTURES TEST------------------------*/
+
 #include "graphics/src/rse_texture.h"
 TestSuite(rse_textures);
 
 Test(rse_textures, load_png_image)
 {
     rse_load_texture("../../miotacz_piorunów.png");
-}
+}