Remove redundant OPTIONS_GHC pragmas from templates

[sol]

There are two things that I lack the context and background to comprehend.

1. For what reason would these pragmas be needed in the first place?
2. What was the rational for changing these in f47768a? Was it simply an oversight, or are we at the point where "a subjective urge for tidiness" takes precedences over providing value to the user and backwards compatibility?

• squash commits (I did this through GitHub UI from mobile..)

[sol]

Just to be clear, if this was an honest mistake, then that's OK with me. Nobody's perfect and mistakes do happen. That's normal.

But if this was intentional, then I don't have much sympathy for it.