[MNT] Removed build docker nightly workflow file

[rmanaem]

• Related to Add nightly docker build to synced workflows workflows#92

Checklist

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• PR has an interpretable title with a prefix ([ENH], [FIX], [REF], [TST], [CI], [MNT], [INF], [MODEL], [DOC]) (see our Contributing Guidelines for more info)
• PR has a label for the release changelog or skip-release (to be applied by maintainers only)
• PR links to GitHub issue with mention Closes #XXXX
• Tests pass
• Checks pass

For new features:

• Tests have been added

For bug fixes:

• There is at least one test that would fail under the original bug conditions.

[coveralls]

Pull Request Test Coverage Report for Build 11055748564

Details

• 0 of 0 changed or added relevant lines in 0 files are covered.
• No unchanged relevant lines lost coverage.
• Overall coverage remained the same at 98.082%

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Totals
Change from base Build 11044109634:	0.0%
Covered Lines:	767
Relevant Lines:	782

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💛 - Coveralls

[codecov]

Codecov Report

All modified and coverable lines are covered by tests ✅

Project coverage is 98.08%. Comparing base (da72256) to head (2a7239b).
Report is 2 commits behind head on main.

Additional details and impacted files

@@           Coverage Diff           @@
##             main     #348   +/-   ##
=======================================
  Coverage   98.08%   98.08%           
=======================================
  Files          13       13           
  Lines         782      782           
=======================================
  Hits          767      767           
  Misses         15       15           

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