@Override
		protected void doRun() {
			symProvider.symbolChanged(symbol);
			refProvider.symbolChanged(symbol);
		}
Tells a plugin that it is no longer needed.
The plugin should remove itself from anything that
it is registered to and release any resources.
Ghidra/Features/Base/src/main/java/ghidra/app/plugin/core/symtable/SymbolTablePlugin.java