Disable share (email, message, airdrop) on Finder and Safari Finder has the option to share via email, message or airdrop is you right-click/(control-click) on a file as one can see in the image below, 

I don't need this feature and I wouldn't mind if it weren't for the fact that if you accidentally pass over the said option, I get the beach ball for a random interval of time ranging from 5-60 seconds.

A similar event also happens when I click on Safari's Share menu. 



Granted that one can use keyboard shortcuts to avoid control-click altogether, but I prefer the mouse.

I have already turned off all contextual services in keyboard preferences and pored over the safari and finder .plist files to no result.

Can anyone point me in the right direction? Without installing third party apps please!

Operating system: Mountain Lion 10.8.5
Programs installed: fresh install (a month old) + libreoffice, Dupeguru, VLC, qbittorent, synctwofolders, cool-term, DJview.
You can't.

But you can do away with the buttons at some places at least:

Anywhere you see the "share-button" you can command-drag it out of the toolbar and it will disappear.

Also you can disable parts of it it via your system preferences:

Click on the "extensions" pane



Then disable the sharing services you don't want by unchecking their checkmark:



Lastly, there's the extension in the "today"-section of notification center.

You can easily delete it there by clicking on "Edit" and then clicking the red delete icon.