pygmt.x2sys_cross: Remove the deprecated parameter 'trackvalues' [Deprecated since 0.18.0] (#4834)

Author: seisman

pygmt/src/x2sys_cross.py

@@ -16,7 +16,6 @@
 from pygmt.helpers import (
     build_arg_list,
     data_kind,
-    deprecate_parameter,
     fmt_docstring,
     unique_name,
     use_alias,
@@ -59,8 +58,6 @@ def tempfile_from_dftrack(track, suffix):
 
 
 @fmt_docstring
-# TODO(PyGMT>=0.20.0): Remove the deprecated 'trackvalues' parameter.
-@deprecate_parameter("trackvalues", "track_values", "v0.18.0", remove_version="v0.20.0")
 @use_alias(
     A="combitable",
     C="runtimes",