truly restore .drone.yml

.drone.yml

@@ -8,9 +8,6 @@ steps:
   commands:
   - apk add --no-cache curl grep libidn sipcalc gawk git patch bash python3
   - bash generate.sh
-  when:
-    event:
-    - push
 - name: create release tag
   image: alpine:latest
   environment:
@@ -38,4 +35,4 @@ steps:
 trigger:
   event:
   - push
-  - tag
+  - tag