Prune imports

[ChrisRackauckas]

Continues #135

[codecov]

Codecov Report

Merging #140 (90f68f5) into master (f393ae7) will decrease coverage by 25.88%.
The diff coverage is 61.02%.

@@             Coverage Diff             @@
##           master     #140       +/-   ##
===========================================
- Coverage   86.97%   61.09%   -25.89%     
===========================================
  Files           3       18       +15     
  Lines         384      568      +184     
===========================================
+ Hits          334      347       +13     
- Misses         50      221      +171     

Impacted Files	Coverage Δ
src/solve/multistartoptimization.jl	0.00% <0.00%> (ø)
src/solve/quaddirect.jl	0.00% <0.00%> (ø)
src/solve_flux.jl	0.00% <0.00%> (ø)
src/solve_optim.jl	0.00% <0.00%> (ø)
src/solve/solve.jl	28.57% <28.57%> (ø)
src/solve/flux.jl	73.33% <73.33%> (ø)
src/solve/evolutionary.jl	79.16% <79.16%> (ø)
src/solve/blackboxoptim.jl	80.76% <80.76%> (ø)
src/solve/cmaevolutionstrategy.jl	81.81% <81.81%> (ø)
src/solve/optim.jl	87.75% <87.75%> (ø)
... and 25 more

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