Follow these Steps:
Step 1: Quit iTunes, then open Terminal.
Step 2: Copy and paste this into a single line.
defaults write com.apple.iTunes hide-ping-dropdown -bool TRUEStep 3: Hit return.
Step 4: Restart iTunes. It's now done, the Ping drop-down menu has been removed.
Step 5: If you want to bring it back, simply repeat the same steps but replace the code in step 2 with this: