[jjbb] check_paths_for_matches.py not required anymore

[v1v]

What does this PR do?

Delete unrequired file

Why is it important?

Simplify our JJBB configuration

[codecov-io]

Codecov Report

Merging #2925 into master will decrease coverage by 0.76%.
The diff coverage is n/a.

@@            Coverage Diff             @@
##           master    #2925      +/-   ##
==========================================
- Coverage   80.11%   79.35%   -0.77%     
==========================================
  Files          90       83       -7     
  Lines        4899     4364     -535     
==========================================
- Hits         3925     3463     -462     
+ Misses        974      901      -73

Impacted Files	Coverage Δ
beater/beater.go	72.04% <0%> (-10.62%)	⬇️
sourcemap/mapper.go	87.23% <0%> (-4.44%)	⬇️
model/stacktrace_frame.go	98.36% <0%> (-1.64%)	⬇️
beater/config/config.go	76.66% <0%> (-0.55%)	⬇️
beater/api/mux.go	71.96% <0%> (-0.01%)	⬇️
sourcemap/store.go
beater/config/register.go
beater/config/mode.go
beater/config/rum.go
elasticsearch/client.go
... and 4 more