Remove boiler plate string in title (#2225)

Author: RickWinter

.github/ISSUE_TEMPLATE/bug-report.yml

@@ -1,6 +1,5 @@
 name: Bug report
 description: Report a bug in the Azure SDK for Rust
-title: "[BUG] "
 labels: ["needs-triage"]
 type: "Bug"
 body:

.github/ISSUE_TEMPLATE/feature-request.yml

@@ -1,6 +1,5 @@
 name: Feature request
 description: Suggest an idea for this project
-title: "[Feature Request]: "
 labels: ["needs-triage"]
 type: "Feature"