correct xtick.alignment validation paramters

MuhammadFarooq1234 · MuhammadFarooq1234 · commit 7a5e609d3852 · 2020-05-06T13:48:55.000-04:00
diff --git a/lib/matplotlib/rcsetup.py b/lib/matplotlib/rcsetup.py
@@ -1344,7 +1344,7 @@ def _convert_validator_spec(key, conv):
     'xtick.labelsize':   ['medium', validate_fontsize],
     'xtick.direction':   ['out', validate_string],            # direction of xticks
     'xtick.alignment':   ['center',
-                          ['center', 'top', 'bottom', 'baseline', 'center_baseline']],
+                          ['center', 'right', 'left']],
 
     'ytick.left':        [True, validate_bool],  # draw ticks on the left side
     'ytick.right':       [False, validate_bool],  # draw ticks on the right side
