Removed assignees from issue templates (#146)

Author: dreamorosi

.github/ISSUE_TEMPLATE/BUG_REPORT.md

@@ -3,8 +3,6 @@ name: Bug report
 about: Create a report to help us improve
 title: "(module name): short issue description"
 labels: bug, triage
-assignees: saragerion, alan-churley
-
 ---
 
 <!--- Before you start, make sure that the bug hasn't been reported already https://github.com/awslabs/aws-lambda-powertools-typescript/issues -->

.github/ISSUE_TEMPLATE/DOC_IMPROVEMENT.md

@@ -3,8 +3,6 @@ name: Documentation improvement
 about: Suggest a documentation update, improvement
 title: "(module name): short issue description"
 labels: documentation
-assignees: saragerion, alan-churley
-
 ---
 
 <!--- 1. Make sure you follow our Contributing Guidelines: https://github.com/awslabs/aws-lambda-powertools-typescript/blob/main/CONTRIBUTING.md -->

.github/ISSUE_TEMPLATE/FEATURE_REQUEST.md

@@ -3,8 +3,6 @@ name: Feature request
 about: Suggest an idea for this project
 title: "(module name): short issue description"
 labels: feature-request, triage
-assignees: saragerion, alan-churley
-
 ---
 
 <!--- 1. Make sure you follow our Contributing Guidelines: https://github.com/awslabs/aws-lambda-powertools-typescript/blob/main/CONTRIBUTING.md -->