docs: remove incorrect parameters (#10876)

Author: cpcloud

ibis/expr/types/core.py

@@ -792,8 +792,6 @@ def to_json(self, path: str | Path, /, **kwargs: Any) -> None:
 
         Parameters
         ----------
-        expr
-            The ibis expression to execute and persist to Delta Lake table.
         path
             The data source. A string or Path to the Delta Lake table.
         kwargs

ibis/expr/types/relations.py

@@ -3574,8 +3574,6 @@ def to_pandas(
 
         Parameters
         ----------
-        expr
-            Ibis expression to execute.
         params
             Mapping of scalar parameter expressions to value.
         limit