Remove skips for EnableCollection tests

These tests have been made less flaky.

Test: while ./art/tools/run-libjdwp-tests.sh --mode=host --test org.apache.harmony.jpda.tests.jdwp.MultiSession.EnableCollectionTest; do; done;
Test: while ./art/tools/run-libjdwp-tests.sh --mode=host --test org.apache.harmony.jpda.tests.jdwp.ObjectReference.EnableCollectionTest; do; done;
Test: while ./art/tools/run-libjdwp-tests.sh --mode=host --test org.apache.harmony.jpda.tests.jdwp.ObjectReference.IsCollectedTest; do; done;
Bug: 70958370
Bug: 69121056

Change-Id: Ic92d58d5c01559bf795327121a80952ff317cfae
diff --git a/tools/external_oj_libjdwp_art_failures.txt b/tools/external_oj_libjdwp_art_failures.txt
index 828c0aa..88ffa6e 100644
--- a/tools/external_oj_libjdwp_art_failures.txt
+++ b/tools/external_oj_libjdwp_art_failures.txt
@@ -53,19 +53,6 @@
            "org.apache.harmony.jpda.tests.jdwp.VirtualMachine.CapabilitiesNewTest#testCapabilitiesNew001" ]
 },
 {
-  description: "Test is flaky",
-  result: EXEC_FAILED,
-  bug: 69121056,
-  name: "org.apache.harmony.jpda.tests.jdwp.ObjectReference.IsCollectedTest#testIsCollected001"
-},
-{
-  description: "Test is flaky",
-  result: EXEC_FAILED,
-  bug: 70958370,
-  names: [ "org.apache.harmony.jpda.tests.jdwp.ObjectReference.EnableCollectionTest#testEnableCollection001",
-           "org.apache.harmony.jpda.tests.jdwp.MultiSession.EnableCollectionTest#testEnableCollection001" ]
-},
-{
   description: "Test crashes",
   result: EXEC_FAILED,
   bug: 69591477,
diff --git a/tools/prebuilt_libjdwp_art_failures.txt b/tools/prebuilt_libjdwp_art_failures.txt
index 7a8a4dd..b0475bb 100644
--- a/tools/prebuilt_libjdwp_art_failures.txt
+++ b/tools/prebuilt_libjdwp_art_failures.txt
@@ -102,12 +102,6 @@
            "org.apache.harmony.jpda.tests.jdwp.VirtualMachine.CapabilitiesNewTest#testCapabilitiesNew001" ]
 },
 {
-  description: "Test is flaky",
-  result: EXEC_FAILED,
-  bug: 69121056,
-  name: "org.apache.harmony.jpda.tests.jdwp.ObjectReference.IsCollectedTest#testIsCollected001"
-},
-{
   description: "Test for ddms extensions that are not implemented for prebuilt-libjdwp",
   result: EXEC_FAILED,
   bug: 69169846,
@@ -118,12 +112,5 @@
   result: EXEC_FAILED,
   bug: 69591477,
   name: "org.apache.harmony.jpda.tests.jdwp.VirtualMachine.ExitTest#testExit001"
-},
-{
-  description: "Test is flakey",
-  result: EXEC_FAILED,
-  bug: 70958370,
-  names: [ "org.apache.harmony.jpda.tests.jdwp.ObjectReference.EnableCollectionTest#testEnableCollection001",
-           "org.apache.harmony.jpda.tests.jdwp.MultiSession.EnableCollectionTest#testEnableCollection001" ]
 }
 ]