change import

Signed-off-by: martinvuyk <[email protected]>

stdlib/src/builtin/string_literal.mojo

@@ -17,16 +17,11 @@ These are Mojo built-ins, so you don't need to import them.
 
 from collections import List
 from collections.string.format import _CurlyEntryFormattable, _FormatCurlyEntry
-from collections.string.string_slice import (
-    StringSlice,
-    StaticString,
-    _StringSliceIter,
-    _to_string_list,
-)
+from collections.string.string_slice import _StringSliceIter, _to_string_list
 from hashlib._hasher import _HashableWithHasher, _Hasher
 from memory import UnsafePointer, memcpy, Span
 from sys.ffi import c_char
-from utils import StringRef, Writable, Writer
+from utils import StaticString, StringRef, StringSlice, Writable, Writer
 from utils._visualizers import lldb_formatter_wrapping_type