fix(locale): remove invalid city patterns from pt_BR

[matthewmayer]

> allFakers.pt_BR.location.city()
// 'undefined Hugo'

This is because two of the patterns for city reference city_prefix, but this is empty for pt_PT
https://github.com/faker-js/faker/blob/next/src/locales/pt_BR/location/city_prefix.ts

Removed these patterns

[codecov]

Codecov Report

Merging #1913 (4065ecb) into next (cf2ce68) will increase coverage by 0.00%.
The diff coverage is n/a.

Additional details and impacted files

@@           Coverage Diff           @@
##             next    #1913   +/-   ##
=======================================
  Coverage   99.62%   99.62%           
=======================================
  Files        2356     2356           
  Lines      236565   236563    -2     
  Branches     1190     1194    +4     
=======================================
+ Hits       235670   235687   +17     
+ Misses        873      854   -19     
  Partials       22       22           

Impacted Files	Coverage Δ
src/locales/pt_BR/location/city.ts	100.00% <ø> (ø)
src/modules/internet/user-agent.ts	92.60% <0.00%> (+5.62%)	⬆️

[xDivisionByZerox]

Should we remove the city_prefix.ts file (in this locale) entirely?

[ST-DDT]

Should we remove the city_prefix.ts file (in this locale) entirely?

I think the empty array here is a marker that these data are intentionally missing instead of just being missing.