Fix a few IDE warnings (#1345)

src/main/java/carpet/helpers/ParticleDisplay.java

@@ -50,7 +50,6 @@ public class ParticleDisplay
         if (lineLengthSq == 0) return;
 
         Vec3 incvec = to.subtract(from).normalize();//    multiply(50/sqrt(lineLengthSq));
-        int pcount = 0;
         for (Vec3 delta = new Vec3(0.0,0.0,0.0);
              delta.lengthSqr()<lineLengthSq;
              delta = delta.add(incvec.scale(player.level.random.nextFloat())))