Remove no_wait option and document it's not supported.

[fcevado]

96

i forgot about that. sorry for the delay.

[coveralls]

Pull Request Test Coverage Report for Build 483a2c96a4b9fd0b94c3aff30c807d3f50115178-PR-117

• 0 of 0 changed or added relevant lines in 0 files are covered.
• No unchanged relevant lines lost coverage.
• Overall coverage remained the same at 75.773%

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Totals
Change from base Build cc52799a398d78d9b20b2b4bbf13f3b11fe21ca3:	0.0%
Covered Lines:	147
Relevant Lines:	194

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💛 - Coveralls

[josevalim]

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