fix: TT-142 Remove role field from User model

[PaulRC-ioet]

Remove role field from User model and update the tests.

[codecov]

Codecov Report

Merging #633 (f8fd270) into master (13de42e) will increase coverage by 1.09%.
The diff coverage is 99.22%.

@@            Coverage Diff             @@
##           master     #633      +/-   ##
==========================================
+ Coverage   93.09%   94.18%   +1.09%     
==========================================
  Files          85       95      +10     
  Lines        1564     1772     +208     
  Branches      107      116       +9     
==========================================
+ Hits         1456     1669     +213     
+ Misses         67       63       -4     
+ Partials       41       40       -1     

Impacted Files	Coverage Δ
src/app/app-routing.module.ts	100.00% <ø> (ø)
...nents/time-range-form/time-range-form.component.ts	100.00% <ø> (ø)
...project-list-hover/project-list-hover.component.ts	88.37% <ø> (ø)
...dules/time-entries/pages/time-entries.component.ts	84.28% <92.85%> (+1.47%)	⬆️
src/app/modules/users/store/user.reducers.ts	94.73% <94.73%> (ø)
src/app/guards/login-guard/login.guard.ts	100.00% <100.00%> (ø)
...nologies-report-guard/technologies-report.guard.ts	100.00% <100.00%> (ø)
src/app/modules/login/login.component.ts	100.00% <100.00%> (+16.66%)	⬆️
...app/modules/login/services/azure.ad.b2c.service.ts	86.95% <100.00%> (+4.60%)	⬆️
...ponents/details-fields/details-fields.component.ts	93.18% <100.00%> (+6.00%)	⬆️
... and 33 more

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