Merge pull request #2299 from takluyver/remove-duplicate-input-transforms Remove code from prefilter that duplicates functionality in inputsplitter This is the first step towards implementing IPEP 2 (#2293). Removed all the static transformations from prefilter, because we're relying on the equivalent functionality in inputsplitter. Note that this is a backwards-incompatible change for anyone who might have relied on the low-level details of the prefiltering machinery. Regular users of the IPython applications themselves will not see any changes in behavior.