Removes projectile.cpp

Removes the projectile.cpp file. The removal indicates that the associated projectile prediction functionality is no longer needed or has been moved elsewhere.

source/projectile_prediction/projectile.cpp

@@ -1,10 +0,0 @@
-//
-// Created by Vlad on 6/9/2024.
-//
-
-#include "omath/projectile_prediction/projectile.hpp"
-#include <omath/engines/source_engine/formulas.hpp>
-
-namespace omath::projectile_prediction
-{
-} // namespace omath::projectile_prediction