Stop trying to read depfile from vtsc

vtsc just ignores the -d argument and apparently can't write a depfile.
So for now, just stop assuming it produces one.

Bug: 121058584
Bug: 120496070
Test: NINJA_ARGS="-w missingdepfile=err" m libvts_interfacespecification
Change-Id: Ie1483fbeead9f710d8a6636df07ce44bbc4a6e2d
diff --git a/core/definitions.mk b/core/definitions.mk
index a675080..a9807f1 100644
--- a/core/definitions.mk
+++ b/core/definitions.mk
@@ -1023,7 +1023,7 @@
 @mkdir -p $(dir $@)
 @mkdir -p $(PRIVATE_HEADER_OUTPUT_DIR)
 @echo "Generating C++ from VTS: $(PRIVATE_MODULE) <= $<"
-$(hide) $(VTSC) -d$(basename $@).vts.P $(PRIVATE_VTS_FLAGS) \
+$(hide) $(VTSC) -TODO_b/120496070 $(PRIVATE_VTS_FLAGS) \
     $< $(PRIVATE_HEADER_OUTPUT_DIR) $@
 endef