RDISCROWD-7806: Remove bfs, dfs unused schedulers

[dchhabda]

Issue number of the reported bug or feature request: #

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[coveralls]

Pull Request Test Coverage Report for Build 12266177335

Details

• 1 of 1 (100.0%) changed or added relevant line in 1 file are covered.
• 2 unchanged lines in 2 files lost coverage.
• Overall coverage increased (+0.02%) to 94.108%

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Files with Coverage Reduction	New Missed Lines	%
pybossa/api/init.py	1	97.11%
pybossa/sched.py	1	95.4%

Totals
Change from base Build 12167992538:	0.02%
Covered Lines:	17443
Relevant Lines:	18535

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💛 - Coveralls

[n00rsy]

lgtm