Set unused prompts to an empty string

modules/prompt/functions/prompt_minimal_setup

@@ -44,6 +44,7 @@ function prompt_minimal_setup {
 
   # Define prompts.
   PROMPT='%2~${vcs_info_msg_0_} » '
+  RPROMPT=''
 }
 
 prompt_minimal_setup "$@"

modules/prompt/functions/prompt_steeef_setup

@@ -88,6 +88,7 @@ function prompt_steeef_setup {
   PROMPT="
 ${_prompt_steeef_colors[3]}%n%f at ${_prompt_steeef_colors[2]}%m%f in ${_prompt_steeef_colors[5]}%~%f "'${vcs_info_msg_0_}'"
 "'$python_info[virtualenv]'"$ "
+  RPROMPT=''
 }
 
 prompt_steeef_setup "$@"