Unset persist.heapprofd.enable.

Heapprofd now starts up on demand if we start a tracing session, so we
do not need it to idle around.

Bug: 169499544
Change-Id: I945d92d08b1eb459ff8dfd210ed87d947d840116
Merged-In: I945d92d08b1eb459ff8dfd210ed87d947d840116
diff --git a/product.prop b/product.prop
index ebee6fe..81171da 100644
--- a/product.prop
+++ b/product.prop
@@ -42,7 +42,6 @@
 # system props for perfetto
 # System prop to turn on CdmaLTEPhone always