void primarySymbolSet(Symbol symbol, Symbol oldPrimarySymbol) {
		// fire event: old Value = symbol address, new value = reference address
		program.symbolChanged(symbol, ProgramEvent.SYMBOL_PRIMARY_STATE_CHANGED,
			symbol.getAddress(), null, oldPrimarySymbol, symbol);
	}
Called by the NamespaceManager when a namespace is removed; remove all symbols that have the
given namespace ID.

@param namespaceID ID of namespace being removed
Ghidra/Framework/SoftwareModeling/src/main/java/ghidra/program/database/symbol/SymbolManager.java