Remove blame lines added leading whitespace.
Created by: cirosantilli
This was adding 2 extra spaces to the blame.
Before: (there are two whitespaces before every line content)
After:
I think the new spacing is fine: if we want to control it let's do it with CSS.
I really wanted to get rid of that :erb
block but I was not able to as mentioned in https://github.com/gitlabhq/gitlabhq/pull/7880