make issues less bureaucratic

.gitea/issue_template/001-abra-bug.md

@@ -7,14 +7,4 @@ labels:
   - abra
 ---
 
-## Describe the current behavior
-
-## Steps to reproduce
-
-## Describe the expected behavior
-
-## Any idea how this might be fixed?
-
-## Additional information
-
-<!-- run "abra -v" on the command-line -->
+<!-- please include your abra version ("abra -v") -->

.gitea/issue_template/002-abra-feat.md

@@ -6,7 +6,3 @@ labels:
   - enhancement
   - abra
 ---
-
-## Describe the problem to be solved
-
-## Describe the solution you would like

.gitea/issue_template/003-docs.md

@@ -5,7 +5,3 @@ title: ""
 labels:
   - documentation
 ---
-
-## Parts of the documentation concerned
-
-## Describe the desired information/correction

.gitea/issue_template/004-install.md

@@ -7,10 +7,4 @@ labels:
   - installer
 ---
 
-## Describe the problem
-
-## Provide the exact sequence of commands / steps that you executed before running into the problem
-
-## Additional information
-
-- OS:
+<!-- please include OS info! -->