MAINT: Remove extra the's in deprecation messages (#17222)

Author: gfyoung

pandas/json.py

@@ -3,5 +3,5 @@
 import warnings
 warnings.warn("The pandas.json module is deprecated and will be "
               "removed in a future version. Please import from "
-              "the pandas.io.json instead", FutureWarning, stacklevel=2)
+              "pandas.io.json instead", FutureWarning, stacklevel=2)
 from pandas._libs.json import dumps, loads

pandas/parser.py

@@ -3,6 +3,6 @@
 import warnings
 warnings.warn("The pandas.parser module is deprecated and will be "
               "removed in a future version. Please import from "
-              "the pandas.io.parser instead", FutureWarning, stacklevel=2)
+              "pandas.io.parser instead", FutureWarning, stacklevel=2)
 from pandas._libs.parsers import na_values
 from pandas.io.common import CParserError