remove coupon and discount for cred exams

[abhigyanghosh30]

Done

• Remove coupon for CUE.01 Linux exam

QA

• Check out this feature branch
• Run the site using the command ./run serve or dotrun
• View the site locally in your web browser at: http://0.0.0.0:8001/
  • Be sure to test on mobile, tablet and desktop screen sizes
• Go to /credentials/shop
  • Price should be 100$
• proceed to checkout.
  • The price should be 100$ everywhere. VAT is yet to be determined.

Issue / Card

Fixes #WD-15553

Screenshots

[If relevant, please include a screenshot.]

Help

QA steps - Commit guidelines

[webteam-app]

Demo

Jenkins

demos.haus

[codecov]

Codecov Report

All modified and coverable lines are covered by tests ✅

Project coverage is 69.63%. Comparing base (3a07e82) to head (9607b13).
Report is 54 commits behind head on main.

Additional details and impacted files

@@           Coverage Diff           @@
##             main   #14383   +/-   ##
=======================================
  Coverage   69.63%   69.63%           
=======================================
  Files         120      120           
  Lines        3418     3418           
  Branches     1178     1174    -4     
=======================================
  Hits         2380     2380           
  Misses       1013     1013           
  Partials       25       25           

[linux-in-flux]

I tested in the following way:
Went to page using my normal account, preset to California, flat rate $100 USD.
Reset location to Germany, hit save, recalculated to include $19 in VAT.
Reset to France, hit save, recalculated to $20.

LGTM.

[linux-in-flux]

Checked that purchase reflects one year ahead and I can schedule ahead. Got error when I tried to schedule out of range. LGTM