Update issue templates

Author: pyper-dev

.github/ISSUE_TEMPLATE/bug_report.md

@@ -3,7 +3,7 @@ name: Bug report
 about: Help us find and resolve bugs
 title: "[BUG] <New Bug>"
 labels: ''
-assignees: RichardZhu2
+assignees: ''
 
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.github/ISSUE_TEMPLATE/feature_request.md

@@ -3,7 +3,7 @@ name: Feature request
 about: Suggest an idea for this project
 title: "[FEATURE] <New Feature>"
 labels: ''
-assignees: RichardZhu2
+assignees: ''
 
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