Revert "github: Improve Pull Request template"

This commit was accidently pushed to wrong remote and
it should be properly reviewed.

This reverts commit 6859b0a6f2.

.github/pull_request_template

@@ -1,21 +1,5 @@
-1. **Package details**
+Maintainer: me / @\<github-user> (find it by checking history of the package Makefile)
+Compile tested: (put here arch, model, OpenWrt version)
+Run tested: (put here arch, model, OpenWrt version, tests done)
 
-    a. Maintainer: @\<github-user> (find it by checking history of the package Makefile)
+Description:
-
-    b. Description:
-
-2. **Indication of run testing**
-
-    a. OpenWrt version:
-
-    b. OpenWrt target/subtarget:
-
-    c. OpenWrt device:
-
-3. **Formalitiesr**
-
-    a. Review the [CONTRIBUTING.md](../CONTRIBUTING.md) file for detailed contributing guidelines.
-
-    b. If your PR contains patch
-    - Mmke sure that it can be applied by git am
-    - Must be in a way that it is potentianally upstreamable (subject, commit description, etc.)