lib/theme: disable THEME_CHECK_SUDO

Move `$THEME_CHECK_SUDO` to `lib/them`, and set it to `false` instead of `true`.

themes/base.theme.bash

@@ -26,7 +26,9 @@ SCM_THEME_CURRENT_USER_SUFFIX=''
 SCM_THEME_CHAR_PREFIX=''
 SCM_THEME_CHAR_SUFFIX=''
 
-THEME_BATTERY_PERCENTAGE_CHECK=${THEME_BATTERY_PERCENTAGE_CHECK:=true}
+# Define this here so it can be used by all of the themes
+: "${THEME_CHECK_SUDO:=false}"
+: "${THEME_BATTERY_PERCENTAGE_CHECK:=true}"
 
 SCM_GIT_SHOW_DETAILS=${SCM_GIT_SHOW_DETAILS:=true}
 SCM_GIT_SHOW_REMOTE_INFO=${SCM_GIT_SHOW_REMOTE_INFO:=auto}