Remove redundant

[ChenZhao44]

Multigraph backend was moved to Multigraphs.jl. Benchmarks were moved to quantum-benchmarks.

[Roger-luo]

I think you need to either export ne in Multigraph package or import it from LightGraph here. The tests are not passing at the moment.

[ChenZhao44]

I think you need to either export ne in Multigraph package or import it from LightGraph here. The tests are not passing at the moment.

This error occurs because it used the older version of the Multigraphs. Could you please register a new version for the Multigraph package?

[codecov[bot]]

Codecov Report

Merging #60 into master will decrease coverage by 0.20%. The diff coverage is 100.00%.

@@            Coverage Diff             @@
##           master      #60      +/-   ##
==========================================
- Coverage   89.47%   89.26%   -0.21%     
==========================================
  Files          14       10       -4     
  Lines        1558     1360     -198     
==========================================
- Hits         1394     1214     -180     
+ Misses        164      146      -18     

Impacted Files	Coverage Δ
src/ZXCalculus.jl	100.00% <ø> (ø)
src/abstract_zx_diagram.jl	6.66% <ø> (ø)
src/circuit_extraction.jl	76.28% <ø> (-0.16%)	:arrow_down:
src/qcircuit.jl	73.62% <100.00%> (+0.70%)	:arrow_up:
src/zx_diagram.jl	97.15% <100.00%> (-0.04%)	:arrow_down:
src/zx_graph.jl	92.17% <100.00%> (-0.05%)	:arrow_down:
src/zx_layout.jl	78.94% <0.00%> (-9.29%)	:arrow_down:

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[ChenZhao44]

@Roger-luo Travis CI failed in Julia 1.0. Should we remove the support for the 1.0 version?

[Roger-luo]

yeah, let's remove 1.0 support