Revert "reduce number of rows in reshape.GetDummies.time_get_dummies_1d_sparse benchmark"

This reverts commit e2f892a.

Author: rok

asv_bench/benchmarks/reshape.py

@@ -135,7 +135,7 @@ def time_pivot_table(self):
 class GetDummies(object):
     def setup(self):
         categories = list(string.ascii_letters[:12])
-        s = pd.Series(np.random.choice(categories, size=10000),
+        s = pd.Series(np.random.choice(categories, size=1000000),
                       dtype=pd.api.types.CategoricalDtype(categories))
         self.s = s