remove is_contained_in and has_overlap, but re-export them from pie-modules; remove empty test file

Author: ArneBinder

src/pytorch_ie/utils/span.py

@@ -13,11 +13,14 @@
     Tuple,
 )
 
+# backwards compatibility imports from pie_modules.utils.span
+from pie_modules.utils.span import have_overlap as has_overlap
+from pie_modules.utils.span import is_contained_in
 from transformers import PreTrainedTokenizer
 
 from pytorch_ie.annotations import LabeledSpan, Span
 
-# TODO: most of this should be superseded by pie_modules.utils.span and pie_modules.utils.sequence_tagging,
+# TODO: most of this should be superseded by pie_modules.utils.sequence_tagging,
 #  remove respective content
 
 TypedSpan = Tuple[int, Tuple[int, int]]
@@ -229,19 +232,6 @@ def get_token_slice(
     return start, before_end + 1
 
 
-def is_contained_in(start_end: Tuple[int, int], other_start_end: Tuple[int, int]) -> bool:
-    return other_start_end[0] <= start_end[0] and start_end[1] <= other_start_end[1]
-
-
-def has_overlap(start_end: Tuple[int, int], other_start_end: Tuple[int, int]):
-    return (
-        start_end[0] <= other_start_end[0] < start_end[1]
-        or start_end[0] < other_start_end[1] <= start_end[1]
-        or other_start_end[0] <= start_end[0] < other_start_end[1]
-        or other_start_end[0] < start_end[1] <= other_start_end[1]
-    )
-
-
 def _char_to_token_mapper(
     char_idx: int,
     char_to_token_mapping: Dict[int, int],