Remove build_categorical_column in favor of CategoricalColumn constru…

…ctor (rapidsai#16617)

`build_categorical_column` was largely redundant with the CategoricalColumn constructor, so in the spirit of having One Way to Do Things, replacing the former with the latter.

There is usage of `build_categorical_column` in cugraph that has been replaced in rapidsai/cugraph#4618

Authors:
  - Matthew Roeschke (https://github.com/mroeschke)
  - GALI PREM SAGAR (https://github.com/galipremsagar)

Approvers:
  - Vyas Ramasubramani (https://github.com/vyasr)
  - Richard (Rick) Zamora (https://github.com/rjzamora)
  - GALI PREM SAGAR (https://github.com/galipremsagar)

URL: rapidsai#16617

python/cudf/cudf/core/_internals/where.py

@@ -106,19 +106,6 @@ def _check_and_cast_columns_with_other(
     return _normalize_categorical(source_col.astype(common_dtype), other)
 
 
-def _make_categorical_like(result, column):
-    if isinstance(column, cudf.core.column.CategoricalColumn):
-        result = cudf.core.column.build_categorical_column(
-            categories=column.categories,
-            codes=result,
-            mask=result.base_mask,
-            size=result.size,
-            offset=result.offset,
-            ordered=column.ordered,
-        )
-    return result
-
-
 def _can_cast(from_dtype, to_dtype):
     """
     Utility function to determine if we can cast

python/cudf/cudf/core/column/__init__.py

@@ -8,7 +8,6 @@
 from cudf.core.column.column import (
     ColumnBase,
     as_column,
-    build_categorical_column,
     build_column,
     column_empty,
     column_empty_like,