don't even try to grow pants blocks up

core/block_svg.js

@@ -853,15 +853,6 @@ Blockly.BlockSvg.prototype.updatePreviews = function(closestConnection,
   if (Blockly.highlightedConnection_ &&
       Blockly.highlightedConnection_ != closestConnection) {
     if (this.ghostBlock_ && Blockly.localGhostConnection_) {
-      // If we're connecting inside a pants block and that pants block is at the
-      // beginning of the stack, it may have grown.  We made it look like it
-      // grew up instead of down, but now we have to undo that.
-      var closestSource = Blockly.localGhostConnection_.targetBlock();
-      if (closestSource && Blockly.highlightedConnection_ ==
-          closestSource.getFirstStatementConnection() &&
-          !closestSource.previousConnection.targetConnection) {
-        closestSource.moveBy(0, Blockly.BlockSvg.STATEMENT_BLOCK_SPACE);
-      }
       this.disconnectGhost();
     }
     Blockly.highlightedConnection_ = null;
@@ -904,18 +895,6 @@ Blockly.BlockSvg.prototype.updatePreviews = function(closestConnection,
 
         ghostBlock.moveBy(newX - ghostPosition.x, newY - ghostPosition.y);
 
-      } else {
-        var closestSource = closestConnection.sourceBlock_;
-        if (closestSource && closestConnection ==
-            closestSource.getFirstStatementConnection() &&
-            !closestSource.previousConnection.targetConnection) {
-          // If we're connecting inside a pants block and that pants block is at
-          // the beginning of the stack, it may have grown.  We need to make it
-          //  look like it grew up instead of down.
-          var yOffset = ghostBlock.getHeightWidth().height -
-              Blockly.BlockSvg.MIN_BLOCK_Y;
-          closestSource.moveBy(0, - Blockly.BlockSvg.STATEMENT_BLOCK_SPACE);
-        }
       }
       if (localGhostConnection.type == Blockly.PREVIOUS_STATEMENT &&
           !ghostBlock.nextConnection) {