Complete: Remove useless `RET:` directive
The Markdown Shell Recorder always compares the return value of a
command against `0` unless we explicitly specify a `ERRORS:` directive.
@@ -64,12 +64,10 @@ kdb complete user --max-depth=1
# list suggestions for the namespace user, only the next level as it ends with /
# note the difference to the previous example, which uses no trailing /
kdb complete user/ --max-depth=1
-# RET:0
# STDOUT-REGEX: .*
# list all possible namespaces or mountpoints, only the current level
kdb complete --max-depth=1
-# RET:0
# STDOUT-REGEX: .*
# list suggestions for /sw/elektra/examples/kdb-complete, only the current level
