Removing filesize checking becuase database file sizes are not reliable

[ceb8]

This is a really minor bugfix that just removes the file size check for downloaded files. This is because right now the database filesizes are not reliably accurate, which will lead to confusing output. We can put this check back in when the database issue is resolved.

[astropy-bot]

Hi there @ceb8 👋 - thanks for the pull request! I'm just a friendly 🤖 that checks for issues related to the changelog and making sure that this pull request is milestoned and labeled correctly. This is mainly intended for the maintainers, so if you are not a maintainer you can ignore this, and a maintainer will let you know if any action is required on your part 😃.

Everything looks good from my point of view! 👍

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[codecov]

Codecov Report

Merging #1050 into master will increase coverage by 0.02%.
The diff coverage is n/a.

@@            Coverage Diff             @@
##           master    #1050      +/-   ##
==========================================
+ Coverage   64.22%   64.25%   +0.02%     
==========================================
  Files         135      135              
  Lines       10717    10712       -5     
==========================================
  Hits         6883     6883              
+ Misses       3834     3829       -5

Impacted Files	Coverage Δ
astroquery/mast/core.py	79.01% <ø> (+1.01%)	⬆️

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[bsipocz]

Thanks @ceb8!