Remove duplicate logic from ModuleTestUtils

Bug: 160296318
Test: atest StagedInstallInternalTest
Change-Id: Ia31fc9d5246203da1869cc6d0e6ffcfc8d794080
Merged-In: Ia31fc9d5246203da1869cc6d0e6ffcfc8d794080
(cherry picked from commit c34b5738f13da8a8fbf0628cb70c98fcd5928c86)
2 files changed