Remove AccessHelper.clearPersistence()

[schmidt-sebastian]

Not needed anymore since it was added to the public API

[google-oss-bot]

Size Report ¹

Affected Products

No changes between base commit (ea9775b) and merge commit (38d137f).

Test Logs

• Base (ea9775b): https://android-ci.firebaseopensource.com/view/gcs/android-ci/logs/postsubmit-binary-size/1490717015902523395
• Merge (38d137f): https://android-ci.firebaseopensource.com/view/gcs/android-ci/pr-logs/pull/firebase_firebase-android-sdk/3416/binary-size/1490819681999654913

Notes

• Commit (38d137f) is created by Prow via merging PR base commit (ea9775b) and head commit (51e3279).

1. https://storage.googleapis.com/firebase-sdk-metric-reports/gUoubihiTH.html

[google-oss-bot]

Coverage Report ¹

Affected Products

• firebase-firestore

  Overall coverage changed from 45.52% (ea9775b) to 45.51% (38d137f) by -0.00%.

  Filename	Base (ea9775b)	Merge (38d137f)	Diff
  SetMutation.java	97.14%	94.29%	-2.86%

Test Logs

• Base (ea9775b): https://android-ci.firebaseopensource.com/view/gcs/android-ci/logs/postsubmit-check-coverage/1490717015915106304
• Merge (38d137f): https://android-ci.firebaseopensource.com/view/gcs/android-ci/pr-logs/pull/firebase_firebase-android-sdk/3416/check-coverage-changed/1490819681999654914

Notes

• Commit (38d137f) is created by Prow via merging PR base commit (ea9775b) and head commit (51e3279).
• Run gradle <product>:checkCoverage to produce HTML coverage reports locally. After gradle commands finished, report files can be found under <product-build-dir>/reports/jacoco/.

1. https://storage.googleapis.com/firebase-sdk-metric-reports/a5m40ajJmV.html