fix regular requirements for openqaoa

[vishal-ph]

Description

• Moved ipython requirement to general requirements.txt

[codecov]

Codecov Report

Merging #281 (d07bcb5) into main (c0aa3e8) will not change coverage.
Report is 4 commits behind head on main.
The diff coverage is 100.00%.

@@           Coverage Diff           @@
##             main     #281   +/-   ##
=======================================
  Coverage   88.02%   88.02%           
=======================================
  Files         162      162           
  Lines       17067    17067           
=======================================
  Hits        15024    15024           
  Misses       2043     2043           

Files Changed	Coverage Δ
...c/openqaoa-core/openqaoa/backends/plugin_finder.py	70.58% <100.00%> (ø)

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