void closeView(URL projectView) {
		Project activeProject = tool.getProject();
		if (activeProject == null) {
			Msg.showError(getClass(), tool.getToolFrame(), "Views Only Allowed With Active Project",
				"Cannot remove project view: " + projectView);
			return;
		}

		ProjectDataTreePanel dtp = getViewPanel(projectView);
		if (dtp == null) {
			Msg.showError(getClass(), tool.getToolFrame(), "Cannot Remove Project Not In View",
				"Project view: " + projectView + " not found.");
			return;
		}

		viewRemoved(dtp, projectView, false);
	}
remove (close) the specified project view
@param projectView the url for the view to close
Ghidra/Framework/Project/src/main/java/ghidra/framework/main/ProjectDataPanel.java