Cleanup test imports

tests/browsertests/categories.nim

@@ -1,14 +1,12 @@
-import unittest, options, os, common
+import unittest, options, common
 
 import webdriver
 
 proc selectCategory(session: Session, name: string) =
   with session:
     click "#category-selection .dropdown-toggle"
-
     click "#category-selection ." & name
 
-
 proc categoriesUserTests(session: Session, baseUrl: string) =
   let
     title = "Category Test"
@@ -33,15 +31,12 @@ proc categoriesUserTests(session: Session, baseUrl: string) =
     test "can create category thread":
       with session:
         click "#new-thread-btn"
-
         sendKeys "#thread-title", title
 
         selectCategory "fun"
-
         sendKeys "#reply-textarea", content
 
         click "#create-thread-btn"
-
         checkText "#thread-title .category", "Fun"
 
         navigate baseUrl
@@ -73,7 +68,6 @@ proc categoriesAdminTests(session: Session, baseUrl: string) =
         clear "#add-category input[name='color']"
         clear "#add-category input[name='description']"
 
-
         sendKeys "#add-category input[name='name']", name
         sendKeys "#add-category input[name='color']", color
         sendKeys "#add-category input[name='description']", description

tests/browsertests/issue181.nim

@@ -1,4 +1,4 @@
-import unittest, options, os, common
+import unittest, options, common
 
 import webdriver
 

tests/browsertests/scenario1.nim

@@ -1,4 +1,4 @@
-import unittest, options, os, common
+import unittest, options, common
 
 import webdriver