Removes bot_challenge_page gem

[JPrevost]

This was an interesting idea, but it wasn't triggering enough for to warrant the frustration the upgrade process caused when the gem entirely changed under the hood. I'm sure it made sense, but it was easier to remove it than update the configs to work on newer versions. We may bring it back eventually if it stabilizes or our needs warrant it.

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[coveralls]

Pull Request Test Coverage Report for Build 18377963873

Details

• 0 of 0 changed or added relevant lines in 0 files are covered.
• No unchanged relevant lines lost coverage.
• Overall coverage decreased (-0.004%) to 98.242%

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Totals
Change from base Build 18377781275:	-0.004%
Covered Lines:	838
Relevant Lines:	853

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💛 - Coveralls

[jazairi]

Good riddance!