Fix varnames (no extra tuple)

[hellemo]

Also remove test Manifest

[codecov-commenter]

Codecov Report

Merging #13 (872fa90) into main (6625479) will not change coverage.
The diff coverage is 100.00%.

@@           Coverage Diff           @@
##             main      #13   +/-   ##
=======================================
  Coverage   81.19%   81.19%           
=======================================
  Files           7        7           
  Lines         319      319           
=======================================
  Hits          259      259           
  Misses         60       60           

Impacted Files	Coverage Δ
src/sparsevararray.jl	80.00% <100.00%> (ø)

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