fix(@cubejs-client/core): restore support for Angular by removing dependency on @cubejs-client/dx

[hassankhan]

Check List

• Tests has been run in packages where changes made if available
• Linter has been run for changed code
• Tests for the changes have been added if not covered yet
• Docs have been added / updated if required

[codecov]

Codecov Report

Merging #3972 (e76ae8b) into master (6084407) will not change coverage.
The diff coverage is n/a.

@@           Coverage Diff           @@
##           master    #3972   +/-   ##
=======================================
  Coverage   58.02%   58.02%           
=======================================
  Files         127      127           
  Lines       10646    10646           
  Branches     2592     2592           
=======================================
  Hits         6177     6177           
  Misses       3993     3993           
  Partials      476      476           

Flag	Coverage Δ
cube-backend	58.02% <ø> (ø)

Flags with carried forward coverage won't be shown. Click here to find out more.

---

Continue to review full report at Codecov.

Legend - Click here to learn more
Δ = absolute <relative> (impact), ø = not affected, ? = missing data
Powered by Codecov. Last update 6084407...e76ae8b. Read the comment docs.