Fix in TauAnalysis/MCEmbeddingTools/python/customisers.py (lowPtGsfElectronTask)

[silviodonato]

This PR fixes the unit test failure in TauAnalysis/MCEmbeddingTools(see #32376).
This PR consists in removing three tasks (slimmedLowPtElectronsTask, lowPtGsfElectronTask, gsfTracksOpenConversions) added by #31220.

Validated by running

cmsDriver.py MERGE -s PAT --filein file:simulated_and_cleaned.root  --fileout file:merged.root --era Run2_2016_HIPM --data --scenario pp --conditions auto:run2_data --eventcontent  MINIAODSIM --datatier USER --customise TauAnalysis/MCEmbeddingTools/customisers.customiseMerging --customise_commands "process.patTrigger.processName = cms.string('SIMembedding')" -n -1 

after having run TauAnalysis/MCEmbeddingTools/test/runtests.sh.

[cmsbuild]

+code-checks

Logs: https://cmssdt.cern.ch/SDT/code-checks/cms-sw-PR-32400/20268

• This PR adds an extra 16KB to repository

[cmsbuild]

A new Pull Request was created by @silviodonato (Silvio Donato) for master.

It involves the following packages:

TauAnalysis/MCEmbeddingTools

@cmsbuild, @civanch, @santocch, @mdhildreth can you please review it and eventually sign? Thanks.
@silviodonato, @dpiparo, @qliphy you are the release manager for this.

cms-bot commands are listed here

[silviodonato]

@kandrosov @roger-wolf do you have any comments?
cc: @swayand (author of #17095)

[silviodonato]

please test

[cmsbuild]

+1
https://cmssdt.cern.ch/SDT/jenkins-artifacts/pull-request-integration/PR-2bd057/11381/summary.html
CMSSW: CMSSW_11_3_X_2020-12-05-1100
SCRAM_ARCH: slc7_amd64_gcc900

[cmsbuild]

Comparison results are now available
https://cmssdt.cern.ch/SDT/jenkins-artifacts/pull-request-integration/PR-2bd057/11381/summary.html
CMSSW: CMSSW_11_3_X_2020-12-05-1100
SCRAM_ARCH: slc7_amd64_gcc900

Comparison Summary:

• No significant changes to the logs found
• Reco comparison results: 0 differences found in the comparisons
• DQMHistoTests: Total files compared: 36
• DQMHistoTests: Total histograms compared: 2747014
• DQMHistoTests: Total failures: 1
• DQMHistoTests: Total nulls: 0
• DQMHistoTests: Total successes: 2746991
• DQMHistoTests: Total skipped: 22
• DQMHistoTests: Total Missing objects: 0
• DQMHistoSizes: Histogram memory added: 0.0 KiB( 35 files compared)
• Checked 153 log files, 37 edm output root files, 36 DQM output files

[civanch]

+1

[silviodonato]

merge

[santocch]

+1

[cmsbuild]

This pull request is fully signed and it will be integrated in one of the next master IBs (tests are also fine). This pull request will be automatically merged.