Revert "Copy crash_dump from device to chroot."

This reverts commit 9c38a4e33e19b5846ba1126b5547449ab0a66f69.

Reason for revert: Breaks sync on target:
https://ci.chromium.org/ui/p/art/builders/ci/angler-armv7-debug/2762/overview
https://ci.chromium.org/ui/p/art/builders/ci/angler-armv8-debug/2785/overview

Change-Id: I3e966c5e3ca15ee59da1eb04bff205bbcf75dca4
diff --git a/tools/buildbot-sync.sh b/tools/buildbot-sync.sh
index f8af1a2..28dab0c 100755
--- a/tools/buildbot-sync.sh
+++ b/tools/buildbot-sync.sh
@@ -111,13 +111,6 @@
 activate_apex com.android.conscrypt
 activate_apex com.android.os.statsd
 
-# Replace the crash dump binary with the one on the device. This is because
-# the tombstoned server running is the one on the device.
-msginfo "Copying crash_dump from device to chroot"
-for b in {32,64}; do
-  adb shell "cp /apex/com.android.runtime/bin/crash_dump$b $ART_TEST_CHROOT/apex/com.android.runtime/bin"
-done
-
 # Generate primary boot images on device for testing.
 for b in {32,64}; do
   basename="generate-boot-image$b"