Remove phony target vts-core

The target has been removed from all builders.

Bug: 151896491
Test: none
Change-Id: I5d1b1058b18153c9cedb33b151dec8daab3e2e57
Merged-In: I5d1b1058b18153c9cedb33b151dec8daab3e2e57
diff --git a/core/tasks/vts-core-tests.mk b/core/tasks/vts-core-tests.mk
index 33da020..08663c2 100644
--- a/core/tasks/vts-core-tests.mk
+++ b/core/tasks/vts-core-tests.mk
@@ -28,9 +28,4 @@
 vts: $(compatibility_zip)
 $(call dist-for-goals, vts, $(compatibility_zip))
 
-# TODO(b/149249068): Remove vts-core phony target after it's removed from all
-# builders.
-.PHONY: vts-core
-vts-core: vts
-
 tests: vts