Removal and reclamation of space is easy:
1 - Boot into OSX and launch the Terminal.
2 - Run diskutil list to display all partitions:
3 - Note your recovery partition ID, in this case disk0s3
4 - To erase that partition type :
diskutil eraseVolume HFS+ ErasedDisk /dev/disk0s3
5 - The partition is now gone, now you need to reclaim the space it was using, type:
diskutil mergePartitions HFS+ MacHD disk0s2 disk0s3
6 - Once completed, type diskutil list to show the changes:
Note: disk0s3 has gone, and disk0s2 has increased by ~650mb
Every little helps ;-)