Revert "Fixed post effect being registered in Travel"

This reverts commit ac055c1.

Author: Causeless

Entities/MOSParticle.cpp

@@ -149,14 +149,6 @@ namespace RTE {
 		}
 	}
 
-/////////////////////////////////////////////////////////////////////////////////////////////////////////////////////////////
-
-	void MOSParticle::Update() {
-		MOSprite::Update();
-
-		if (m_pScreenEffect) { SetPostScreenEffectToDraw(); }
-	}
-
 /////////////////////////////////////////////////////////////////////////////////////////////////////////////////////////////
 
 	void MOSParticle::Draw(BITMAP *targetBitmap, const Vector &targetPos, DrawMode mode, bool onlyPhysical) const {

Entities/MOSParticle.h

@@ -130,11 +130,6 @@ namespace RTE {
 		/// <returns>Whether the MOSParticle should immediately halt any travel going on after this sinkage.</returns>
 		bool OnSink(HitData &hd) override { return false; }
 
-		/// <summary>
-		/// Updates this MOParticle. Supposed to be done every frame.
-		/// </summary>
-		void Update() override;
-
 		/// <summary>
 		/// Draws this MOSParticle's current graphical representation to a BITMAP of choice.
 		/// </summary>