Revert "AOSP/Email - Changes for code to work with UnifiedEmail's version bump to the targetSdkVersion to 28 (maximum version). Used JobIntentservice API calls to replace context.startService for EmailBroadcastProcessorService."

This reverts commit 1189cb8b2b2e1cc1fae89112351e6a0b9a8f7c33.

Reason for revert: No notification when new email arrived
Bug: 132923014

Cherry picking: https://android-review.googlesource.com/c/platform/packages/apps/Email/+/991656

Test: manual - Ran the following tests on Pixel phone. Tested the email UI for notifications.

$ make -j 40
$ make EmailTests -j
$ adb install -r out/target/product/marlin/system/product/app/Email/Email.apk
$ adb install -r out/target/product/marlin/testcases/EmailTests/arm64/EmailTests.apk
$ adb shell am instrument -w com.android.email.tests
  Time: 2.986
  OK (157 tests)

Change-Id: If97049cb5238a8a56caddb39827b177882c3c74d
Merged-In: If97049cb5238a8a56caddb39827b177882c3c74d
3 files changed