Revert "[FL-3909] CLI improvements, part I (#3928)" (#3955)

This reverts commit 0f831412fa.

Co-authored-by: あく <alleteam@gmail.com>

applications/services/cli/cli_ansi.c

@@ -1,76 +0,0 @@
-#include "cli_ansi.h"
-
-/**
- * @brief Converts a single character representing a special key into the enum
- * representation
- */
-static CliKey cli_ansi_key_from_mnemonic(char c) {
-    switch(c) {
-    case 'A':
-        return CliKeyUp;
-    case 'B':
-        return CliKeyDown;
-    case 'C':
-        return CliKeyRight;
-    case 'D':
-        return CliKeyLeft;
-    case 'F':
-        return CliKeyEnd;
-    case 'H':
-        return CliKeyHome;
-    default:
-        return CliKeyUnrecognized;
-    }
-}
-
-CliKeyCombo cli_read_ansi_key_combo(Cli* cli) {
-    char ch = cli_getc(cli);
-
-    if(ch != CliKeyEsc)
-        return (CliKeyCombo){
-            .modifiers = CliModKeyNo,
-            .key = ch,
-        };
-
-    ch = cli_getc(cli);
-
-    // ESC ESC -> ESC
-    if(ch == '\e')
-        return (CliKeyCombo){
-            .modifiers = CliModKeyNo,
-            .key = '\e',
-        };
-
-    // ESC <char> -> Alt + <char>
-    if(ch != '[')
-        return (CliKeyCombo){
-            .modifiers = CliModKeyAlt,
-            .key = cli_getc(cli),
-        };
-
-    ch = cli_getc(cli);
-
-    // ESC [ 1
-    if(ch == '1') {
-        // ESC [ 1 ; <modifier bitfield> <key mnemonic>
-        if(cli_getc(cli) == ';') {
-            CliModKey modifiers = (cli_getc(cli) - '0'); // convert following digit to a number
-            modifiers &= ~1;
-            return (CliKeyCombo){
-                .modifiers = modifiers,
-                .key = cli_ansi_key_from_mnemonic(cli_getc(cli)),
-            };
-        }
-
-        return (CliKeyCombo){
-            .modifiers = CliModKeyNo,
-            .key = CliKeyUnrecognized,
-        };
-    }
-
-    // ESC [ <key mnemonic>
-    return (CliKeyCombo){
-        .modifiers = CliModKeyNo,
-        .key = cli_ansi_key_from_mnemonic(ch),
-    };
-}