Remove hover state from detailed graph price comparison

[Kaptard]

I'm submitting a...

• [x] Bug report
• [ ] Feature request
• [ ] Documentation issue or request

Current behavior

Hovering over the price comparison displays the "previous" value which clips over the paranthesis and is kinda redundant

Expected behavior

Shouldn't have hover effect at all, the previous value is already there.

Minimal reproduction of the problem

Environment

Browser:

• [ ] Chrome (desktop) version:
• [ ] Chrome (Android) version:
• [ ] Chrome (iOS) version:
• [ ] Firefox version:
• [ ] Safari (desktop) version:
• [ ] Safari (iOS) version:
• [ ] IE version:
• [ ] Edge version:

For development issues:

• Node version:
• Operating System:

Additional Description

http://puu.sh/BYyvS/6e79e61781.jpg