System.AnsiStrings - wrong implementation of the ExcludeTrailingBackslash & ExcludeTrailingPathDelimiter functions
## Summary
The ExcludeTrailingBackslash & ExcludeTrailingPathDelimiter functions from the System.AnsiStrings has wrong mapping:

Looks like typo due a copy-paste.
## System Information
<!-- The more information are provided the easier it is to replicate the bug -->
- **Operating system:** Alt.Linux 10.2
- **Processor architecture:** x86-64
- **Compiler version:** trunk
- **Device:** PC
## Possible fixes
[patch.patch](/uploads/d8518206752bea00135838e8dc1c04aa/patch.patch)
issue