private void removeTransform(TransformTableActionContext actionContext) {
		SourcePathTransformRecord rowObject = transformsTable.getSelectedRowObject();
		SourcePathTransformer pathTransformer =
			UserDataPathTransformer.getPathTransformer(transformsModel.getProgram());
		String source = rowObject.source();
		if (rowObject.isDirectoryTransform()) {
			pathTransformer.removeDirectoryTransform(source);
		}
		else {
			pathTransformer.removeFileTransform(rowObject.sourceFile());
		}
		transformsModel.reload();
		sourceFilesTableModel.refresh();
	}
Sets isStale to {@code true} when {@code rec} has an event type relevant to the source
file table.  If the event type is {@link ProgramEvent#SOURCE_FILE_REMOVED}, any associated
file transform is also removed.

@param rec program change record
Ghidra/Features/Base/src/main/java/ghidra/app/plugin/core/sourcefilestable/SourceFilesTableProvider.java