remove all summary test

[johnnychen94]

summary results are not very stable; it differs from version to version. Hence I replace all summary tests with axes, eltype and size tests.

[codecov]

Codecov Report

Merging #136 (0239d47) into master (d883892) will not change coverage.
The diff coverage is n/a.

@@           Coverage Diff           @@
##           master     #136   +/-   ##
=======================================
  Coverage   92.09%   92.09%           
=======================================
  Files           8        8           
  Lines         215      215           
=======================================
  Hits          198      198           
  Misses         17       17           

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[Evizero]

I agree wit your point. the one thing I would argue is that it would be nice to at least test that the summary code can be executed without an error

[johnnychen94]

I've added the summary back with @test_nowarn summary(...). But actually, since ImageTransformations doesn't override summary method for any of the view types, the summary(...) should just work.