Do not delete original VM after it is transferred

The transferror & transferee have the same UUId, so even though the
transferee calls `claimVmInstance`, deletion of original VM will lead to
deletion of instance from Secretkeeper.

Test: #importedVmIsEqualToTheOriginalVm_WithStorage
Bug: 294177871
Change-Id: Ia36aea9a8f0cc0074d49cb0730933df725c865d2
diff --git a/tests/testapk/src/java/com/android/microdroid/test/MicrodroidTests.java b/tests/testapk/src/java/com/android/microdroid/test/MicrodroidTests.java
index 8f4df63..e46333f 100644
--- a/tests/testapk/src/java/com/android/microdroid/test/MicrodroidTests.java
+++ b/tests/testapk/src/java/com/android/microdroid/test/MicrodroidTests.java
@@ -1555,7 +1555,6 @@
             assertFileContentsAreEqualInTwoVms("storage.img", vmNameOrig, vmNameImport);
         }
         assertThat(vmImport).isNotEqualTo(vmOrig);
-        vmm.delete(vmNameOrig);
         assertThat(vmImport).isEqualTo(vmm.get(vmNameImport));
         TestResults testResults =
                 runVmTestService(