external/robolectric: delete dead code

Before this CL, this git project contained:
 a) prebuilts and sources for historic robolectric versions
 b) IntelliJ IDEA project metadata
 c) .mk files defining build targets and dependencies which
    are in turn used by the .mk files in external/robolectric-shadows
    and by robolectric tests across the Android platform.

a) and b) appear to be unused / dead code, so this CL deletes it.
Moving the remaining logic from c) into a more appropriate place (eg.
in external/robolectric-shadows) or otherwise refactoring it is left
to a potential future CL.

Bug: 117871396
Test: Cherry-picked this change into the internal master branch and
      verified that the following still work:
      make checkbuild docs
      make RunCarSetupWizardRoboTests RunCarSetupWizardRoboTests-jacoco \
           RunCarSetupWizardLibRoboTests RunCarSetupWizardLibRoboTests-jacoco \
	   RunCarMessengerRoboTests RunCarMessengerRoboTests-jacoco \
	   RunSettingsGoogleRoboTests

Change-Id: I620422eb6127b2e55d34eda7351673b1c5ea41b2
753 files changed
tree: 7869361c499873f77e5ad6774b927b1b213ddc9c
  1. Android.mk
  2. include_framework_res.mk
  3. MODULE_LICENSE_MIT
  4. NOTICE