remove coverage files from Julia's share directory

[jishnub]

Fixes #9, but I'm not sure if this is entirely desirable

[coveralls]

Pull Request Test Coverage Report for Build 24

• 2 of 4 (50.0%) changed or added relevant lines in 1 file are covered.
• No unchanged relevant lines lost coverage.
• Overall coverage increased (+2.4%) to 35.714%

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Changes Missing Coverage	Covered Lines	Changed/Added Lines	%
src/LocalCoverage.jl	2	4	50.0%
<!--	Total:	2	4

Totals
Change from base Build 22:	2.4%
Covered Lines:	10
Relevant Lines:	28

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💛 - Coveralls