Merge pull request #14353 from jacquesqiao/reduce-pass-num-of-test_label_semantic_roles

reduce pass num of test_label_semantic_roles to avoid test timeout

python/paddle/fluid/tests/book/test_label_semantic_roles.py

@@ -38,7 +38,7 @@ depth = 8
 mix_hidden_lr = 1e-3
 
 IS_SPARSE = True
-PASS_NUM = 10
+PASS_NUM = 1
 BATCH_SIZE = 10
 
 embedding_name = 'emb'