Removes unused files.
Squashed 'External/RXPreprocessing/' changes from 27773e4..4521317

4521317 Merge pull request #2 from jasongregori/format-bug
0991606 fix formatter for long long values
2d133e6 fix broken formatters
abaab2e Merge branch 'release/1.0.2'
980dfe0 Merge pull request #1 from JensAyton/master
f14aa06 Example for rx_fold() no longer includes more outputs than inputs.
dc2a21d rx_fold() now processes arguments in documented order.

git-subtree-dir: External/RXPreprocessing
git-subtree-split: 45213174a681e4dbab45bfd65f5ba93d7d94763f
Merge commit 'ae13352c49e443f28b9cdfb2a54a41bdd00086ff' into feature/concision

Conflicts:
	External/RXPreprocessing/RXFold.h
	External/RXPreprocessing/_RXFold.h
	External/RXPreprocessing/_RXInterpolation.h