Remove redundant npm dependency

[rondeo]

Hello Mokkapps!

It seems like you have npm as one of your (dev-) dependency in scrum-daily-standup-picker.
Since you actually need npm to install the dependencies it's redundant to
have npm itself as (dev-) dependency.

Therefore I've removed it and made this PR, merge if you want :)
Be sure to re-run npm i or yarn to actualize your lock files.

Beep boop, I'm a bot.

[coveralls]

Pull Request Test Coverage Report for Build 91

• 0 of 0 changed or added relevant lines in 0 files are covered.
• No unchanged relevant lines lost coverage.
• Overall coverage decreased (-0.9%) to 61.047%

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Totals
Change from base Build 90:	-0.9%
Covered Lines:	344
Relevant Lines:	513

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💛 - Coveralls