Turn off PR comments from codecov
At the moment they're not helpful.  If we sort out the oddly-low
reported numbers from codecov (cf. we can always re-enable
later.
@@ -14,10 +14,7 @@ parsers:
method: no
macro: no
-comment:
- layout: "reach,diff,flags,tree"
- behavior: default
- require_changes: no
+comment: false
ignore:
- "examples/" # Just track Rust->host compiled code
