gameplay: bias in fixed weapon spread for increased pellet shots

remove the extra last pellet in the fixed spread array, since
fixed spread wraps around anyway.

this fixes an issue where the wrapping causes right bias in weapons
like the force-a-nature which have greater than 10 pellets

ref: ValveSoftware/Source-1-Games#3982

Author: mastercoms

src/game/shared/tf/tf_fx_shared.cpp

@@ -110,7 +110,7 @@ void EndGroupingSounds() {}
 
 Vector g_vecFixedWpnSpreadPellets[] = 
 {
-	Vector( 0,0,0 ),	// First pellet goes down the middle
+	Vector( 0,0,0 ),	// First and last pellet goes down the middle to reward fine aim
 	Vector( 1,0,0 ),	
 	Vector( -1,0,0 ),	
 	Vector( 0,-1,0 ),	
@@ -119,7 +119,6 @@ Vector g_vecFixedWpnSpreadPellets[] =
 	Vector( 0.85,0.85,0 ),	
 	Vector( -0.85,-0.85,0 ),	
 	Vector( -0.85,0.85,0 ),	
-	Vector( 0,0,0 ),	// last pellet goes down the middle as well to reward fine aim
 };
 
 //-----------------------------------------------------------------------------