Clean up imports

[jishnub]

No description provided.

[codecov]

Codecov Report

Patch coverage: 100.00% and project coverage change: -3.98% ⚠️

Comparison is base (4f33475) 71.88% compared to head (8d48795) 67.90%.
Report is 9 commits behind head on master.

Additional details and impacted files

@@            Coverage Diff             @@
##           master     #516      +/-   ##
==========================================
- Coverage   71.88%   67.90%   -3.98%     
==========================================
  Files          81       81              
  Lines        8546     8566      +20     
==========================================
- Hits         6143     5817     -326     
- Misses       2403     2749     +346     

Files Changed	Coverage Δ
src/ApproxFunBase.jl	84.00% <ø> (ø)
src/Operators/general/InterlaceOperator.jl	81.33% <ø> (ø)
src/Fun.jl	66.10% <100.00%> (-1.70%)	⬇️
src/LinearAlgebra/helper.jl	68.75% <100.00%> (-0.18%)	⬇️
src/Operators/banded/Conversion.jl	83.87% <100.00%> (-2.57%)	⬇️
src/eigen.jl	66.66% <100.00%> (-29.77%)	⬇️

... and 43 files with indirect coverage changes

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