boolean canRemoveParameters() {
		if (selectedParams.size() == 0) {
			return false;
		}
		for (ParamInfo p : selectedParams) {
			if (p.isAutoParameter() || p.isReturnParameter()) {
				return false;
			}
		}
		return true;
	}
Get the effective function to which changes will be made.  This
will be the same as function unless it is a thunk in which case
the returned function will be the ultimate non-thunk function.
@return non-thunk function
Ghidra/Features/Base/src/main/java/ghidra/app/plugin/core/function/editor/FunctionEditorModel.java