Removes ledgerPinPercentage setting

[NejcZdovc]

Resolves #13035

Submitter Checklist:

• Submitted a ticket for my issue if one did not already exist.
• Used Github auto-closing keywords in the commit message.
• Added/updated tests for this change (for new code or code which already has tests).
• Ran git rebase -i to squash commits (if needed).
• Tagged reviewers and labelled the pull request as needed.
• Request a security/privacy review as needed. (Ask a Brave employee to help if you cannot access this document.)

Test Plan:

• general ledger regression, focused on pinned functionality

Reviewer Checklist:

• Request a security/privacy review as needed if one was not already requested.

Tests

• Adequate test coverage exists to prevent regressions
• Tests should be independent and work correctly when run individually or as a suite ref
• New files have MPL2 license header

[codecov-io]

Codecov Report

Merging #13743 into master will decrease coverage by 0.06%.
The diff coverage is 51.28%.

@@            Coverage Diff             @@
##           master   #13743      +/-   ##
==========================================
- Coverage   56.65%   56.59%   -0.07%     
==========================================
  Files         285      285              
  Lines       28920    28906      -14     
  Branches     4782     4781       -1     
==========================================
- Hits        16385    16358      -27     
- Misses      12535    12548      +13

Flag	Coverage Δ
#unittest	56.59% <51.28%> (-0.07%)	⬇️

Impacted Files	Coverage Δ
app/browser/api/ledger.js	61.6% <ø> (-0.01%)	⬇️
app/common/state/ledgerState.js	84.47% <ø> (-0.48%)	⬇️
js/state/syncUtil.js	39.35% <ø> (ø)	⬆️
js/constants/appConstants.js	100% <ø> (ø)	⬆️
app/browser/reducers/ledgerReducer.js	43.45% <0%> (-0.44%)	⬇️
js/actions/appActions.js	18.49% <0%> (-0.1%)	⬇️
...erer/components/preferences/payment/pinnedInput.js	51.35% <85.71%> (ø)	⬆️
...erer/components/preferences/payment/ledgerTable.js	86.25% <87.5%> (+0.13%)	⬆️
js/stores/appStoreRenderer.js	91.66% <0%> (-8.34%)	⬇️
app/renderer/components/reduxComponent.js	57.75% <0%> (-3.45%)	⬇️
... and 2 more

[jasonrsadler]

Looks good

[NejcZdovc]

master fccdc44
0.23 1073285
0.22 8fe2319