func DeleteImport(fset *token.FileSet, f *ast.File, path string) (deleted bool) {
	return DeleteNamedImport(fset, f, "", path)
}

// DeleteNamedImport deletes the import with the given name and path from the file f, if present.
// If there are duplicate import declarations, all matching ones are deleted.
func DeleteNamedImport(fset *token.FileSet, f *ast.File, name, path string) (deleted bool) {
	var delspecs []*ast.ImportSpec