Fix Transparent Technical Blocks requiring Silk Touch (#50)

No other of the 30 Technical Block Chisel block set have this requirement.

src/main/java/team/chisel/block/BlockCarvableGlass.java

@@ -1,6 +1,8 @@
 package team.chisel.block;
 
 import java.util.List;
+import java.util.Objects;
+import java.util.Random;
 
 import net.minecraft.block.Block;
 import net.minecraft.block.BlockGlass;
@@ -105,4 +107,9 @@ public class BlockCarvableGlass extends BlockGlass implements ICarvable {
     public int getRenderBlockPass() {
         return isAlpha ? 1 : 0;
     }
+
+    @Override
+    public int quantityDropped(Random random) {
+        return Objects.equals(this.getUnlocalizedName(), "tile.chisel.technical2") ? 1 : 0;
+    }
 }