Remove SBSv2 configuration tab and associated data store. Variants are handled in the configuration creation now and not as a preference after-thought.
<?xml version="1.0" encoding="UTF-8"?>
<?NLS TYPE="org.eclipse.help.toc"?>
<toc label="C Predefined Symbols" href="html/symbols/symbols.htm">
<topic label="ANSI Predefined Symbols" href="html/symbols/sym_ansi.htm" />
<topic label="Carbide Predefined Symbols" href="html/symbols/sym_carbide.htm" />
<topic label="Checking Option Settings" href="html/symbols/sym_settings.htm" />
</toc>