Remove incorrect ANSI escape code for LF

ANSI technically doesn't have an escape code for LF, since it just uses the 0x0A character. The regex \xA is incorrect (it should be \x0A) and is being treated as the two-character sequence "xA". But then once we've fixed that, replacing 0x0A with \n in removeAnsiEscapeCodes is a no-op. Better to just remove the str.replace(LF, '\n') call.

Fixes #12608.

src/vs/base/common/strings.ts

@@ -531,14 +531,12 @@ export function lcut(text: string, n: number): string {
 // Escape codes
 // http://en.wikipedia.org/wiki/ANSI_escape_code
 const EL = /\x1B\x5B[12]?K/g; // Erase in line
-const LF = /\xA/g; // line feed
 const COLOR_START = /\x1b\[\d+m/g; // Color
 const COLOR_END = /\x1b\[0?m/g; // Color
 
 export function removeAnsiEscapeCodes(str: string): string {
 	if (str) {
 		str = str.replace(EL, '');
-		str = str.replace(LF, '\n');
 		str = str.replace(COLOR_START, '');
 		str = str.replace(COLOR_END, '');
 	}