Update cran comments

Author: jennybc

cran-comments.md

@@ -9,7 +9,4 @@
 
 ## revdepcheck results
 
-We checked 1 reverse dependencies, comparing R CMD check results across CRAN and dev versions of this package.
-
- * We saw 0 new problems
- * We failed to check 0 packages
+We checked 1 reverse dependency (testthis), comparing R CMD check results across CRAN and dev versions of this package. We see no problems.