Remove .reporting.computations.compound_growth

- moved upstream in #116 and updated there to be
  compatible with pandas 2.1.0.
- remove associated tests.
- update usage in .transport.computations.factor_input().

message_ix_models/model/transport/computations.py

@@ -24,11 +24,11 @@
 from message_ix import make_df
 from message_ix_models import ScenarioInfo
 from message_ix_models.model.structure import get_codes
+from message_ix_models.report.computations import compound_growth
 from message_ix_models.tools import advance
 from message_ix_models.util import MappingAdapter, broadcast, eval_anno, nodes_ex_world
 from sdmx.model.v21 import Code
 
-from message_data.reporting.computations import compound_growth
 from message_data.reporting.util import as_quantity
 from message_data.tools import iea_eei