Remove Specs2 dependency

src/test/scala/gitbucket/core/api/JsonFormatSpec.scala

@@ -2,16 +2,13 @@ package gitbucket.core.api
 
 import gitbucket.core.util.RepositoryName
 
-//import org.specs2.mutable.Specification
-import org.json4s.jackson.JsonMethods.{pretty, parse}
+import org.json4s.jackson.JsonMethods.parse
 import org.json4s._
-//import org.specs2.matcher._
 import org.scalatest.FunSuite
 
 import java.util.{Calendar, TimeZone, Date}
 
 
-
 class JsonFormatSpec extends FunSuite {
   val date1 = {
     val d = Calendar.getInstance(TimeZone.getTimeZone("UTC"))

src/test/scala/gitbucket/core/view/AvatarImageProviderSpec.scala

@@ -5,15 +5,17 @@ import java.util.Date
 import gitbucket.core.model.Account
 import gitbucket.core.service.{SystemSettingsService, RequestCache}
 import gitbucket.core.controller.Context
-import org.mockito.Mockito._
 import SystemSettingsService.SystemSettings
 import javax.servlet.http.HttpServletRequest
 import play.twirl.api.Html
 import org.scalatest.FunSpec
+import org.scalatest.mock.MockitoSugar._
+import org.mockito.Mockito._
+
 
 class AvatarImageProviderSpec extends FunSpec {
 
-  val request = mock(classOf[HttpServletRequest])
+  val request = mock[HttpServletRequest]
   when(request.getRequestURL).thenReturn(new StringBuffer("http://localhost:8080/path.html"))
   when(request.getRequestURI).thenReturn("/path.html")
   when(request.getContextPath).thenReturn("")