Revert "Add Default Character Set setting used by handlers that require a character set to be provided"

This reverts commit b97c391549a4ad41a6ea0d8cc8a74be31ebda04a.
Revert "Make adjustments to go conform with the Unicode support of LiveCode 7.0"

This reverts commit a1ed10deb88bb197ca6864cc3ea7859521daabdb.