Revert "PIPE: Add pipe support for passing data into and out of terminal commands (#2395)" (#2524)

This reverts commit 92b8b58588.

Accidental merge on my part - the code is in decent shape, but isn't meant to go in for 3.0.

src/ui/React/ANSIITypography.tsx

@@ -7,7 +7,7 @@ import { Settings } from "../../Settings/Settings";
 // This particular eslint-disable is correct.
 // In this super specific weird case we in fact do want a regex on an ANSII character.
 // eslint-disable-next-line no-control-regex
-export const ANSI_ESCAPE = new RegExp("\u{001b}\\[(?<code>.*?)m", "ug");
+const ANSI_ESCAPE = new RegExp("\u{001b}\\[(?<code>.*?)m", "ug");
 
 const useStyles = makeStyles()((theme: Theme) => ({
   success: {