Update numeric.py

Author: Staudinger0325

pandas/core/tools/numeric.py

@@ -34,9 +34,9 @@
 
 from pandas.core.arrays import BaseMaskedArray
 from pandas.core.arrays.string_ import StringDtype
-from pandas._libs import libmissing
+
 from pandas.core.dtypes.common import is_string_dtype
-from pandas.core.dtypes.missing import isna
+
 if TYPE_CHECKING:
     from pandas._typing import (
         DateTimeErrorChoices,