Remove continue from conditional

This is an artifact left over from when this function was extracted from
inside a loop b524bb6047

However, `continue` isn't doing anything when not inside a loop and this
now raises a warning in bash 4.4:

"continue: only meaningful in a `for', `while', or `until' loop"

lib/helpers.bash

@@ -1,10 +1,8 @@
 # Helper function loading various enable-able files
 function _load_bash_it_files() {
   subdirectory="$1"
-  if [ ! -d "${BASH_IT}/${subdirectory}/enabled" ]
+  if [ -d "${BASH_IT}/${subdirectory}/enabled" ]
   then
-    continue
-  fi
     FILES="${BASH_IT}/${subdirectory}/enabled/*.bash"
     for config_file in $FILES
     do
@@ -12,6 +10,7 @@ function _load_bash_it_files() {
         source $config_file
       fi
     done
+  fi
 }
 
 # Function for reloading aliases