[FIX] fix github pr template duplicate

.github/PULL_REQUEST_TEMPLATE.md

@@ -13,19 +13,3 @@
 - [ ] This PR fixes bugs
 - [ ] This PR add new features
 - [ ] This PR update documentations or fixes typo
-<!--- 请提供您在PR中更改的简要介绍。-->
-<!--- Provide a general summary of your changes. -->
-
-## Description
-<!-- Provide a detailed description of your changes.. -->
-
-## How has his PR been tested?
-<!--- Put an `x` in the boxes as follows. --->
-- [ ] Please pass the test by running `pytest tests/test_workflow` under upper directory of learnware.
-- [ ] If you add new features, please test new features on your own test scirpt.
-
-## Types of changes
-<!--- Put an `x` in the boxes as follows. --->
-- [ ] This PR fixes bugs
-- [ ] This PR add new features
-- [ ] This PR update documentations or fixes typo