chore: remove redundant info from bug-report template

              -off topic-
このissue書いてて思ったけど、個別サーバーのリポジトリなのにserver urlとmisskey version聞くの不毛そう
backendは尚更

_Originally posted by @Sayamame-beans in #96 (comment)

.github/ISSUE_TEMPLATE/01_bug-report.yml

@@ -53,39 +53,9 @@ body:
         Examples:
           * Model and OS of the device(s): MacBook Pro (14inch, 2021), macOS Ventura 13.4
           * Browser: Chrome 113.0.5672.126
-          * Server URL: misskey.io
-          * Misskey: 13.x.x
       value: |
         * Model and OS of the device(s):
         * Browser:
-        * Server URL:
-        * Misskey:
-      render: markdown
-    validations:
-      required: false
-
-  - type: textarea
-    attributes:
-      label: 🛰 Backend Environment (for server admin)
-      description: |
-        Tell us where on the platform it happens
-        DO NOT WRITE "latest". Please provide the specific version.
-        If you are using a managed service, put that after the version.
-
-        Examples:
-          * Installation Method or Hosting Service: docker compose, k8s/docker, systemd, "Misskey install shell script", development environment
-          * Misskey: 13.x.x
-          * Node: 20.x.x
-          * PostgreSQL: 15.x.x
-          * Redis: 7.x.x
-          * OS and Architecture: Ubuntu 22.04.2 LTS aarch64
-      value: |
-        * Installation Method or Hosting Service:
-        * Misskey:
-        * Node:
-        * PostgreSQL:
-        * Redis:
-        * OS and Architecture:
       render: markdown
     validations:
       required: false