Remove strutility section from TODO.

This has been removed from libuv,
so no need to metion it.

2013.11.21, Version 0.11.15 (Unstable), bfe645ed7e99ca5670d9279ad472b604c129d2e5
* include: remove uv_strlcat() and uv_strlcpy() (Ben Noordhuis)

Author: txdv

TODO

@@ -18,8 +18,3 @@
     - uv_rwlock_*
     - uv_mutex_*
     - uv_thread_*
-  - strutility
-    c# has all the string manipulating utilities it needs.
-    - uv_strlcpy
-    - uv_strlcat
-