private boolean removeOldSymbol(Address address, String name) {
		SymbolTable symbolTable = program.getSymbolTable();
		Symbol[] symbols = symbolTable.getSymbols(address);
		if (symbols.length == 1 && name.equals(symbols[0].getName())) {
			symbolTable.removeSymbolSpecial(symbols[0]);
			return true;
		}
		return false;
	}
When transitioning to an external thunk, remove the old symbol on the linkage pointer/thunk
if it is the only symbol at that address.
@param address symbol address
@param name symbol name
@return true if symbol removed, else false
Ghidra/Features/Base/src/main/java/ghidra/app/util/opinion/ElfProgramBuilder.java