update refactoring.md

Author: crimist

refactoring.md

@@ -5,8 +5,3 @@ Before next release.
 * Deal w/ every TODO
 * refactor project layout - move stuff to internal/ so that code is cleanly seperated from packaging etc.
 * Lots of manual testing, maybe write a stressor tool
-
-## Ideas
-
-* Determine how much memory to pre allocate for maps based on the last N runs maximum size
-  * Create a routine that wakes up every minuite to check peak usage, write changes to a file that just has last N runs