Update dodgy tests.

Author: The-inside-man

core-api/src/test/java/com/optimizely/ab/OptimizelyTest.java

@@ -2892,8 +2892,6 @@ public void getFeatureVariableValueReturnsDefaultValueWhenFeatureEnabledIsFalse(
 
         Optimizely optimizely = optimizelyBuilder.withDecisionService(mockDecisionService).build();
 
-        Attribute attribute = new Attribute("Dummy","Dummy","Dummy");
-
         FeatureDecision featureDecision = new FeatureDecision(multivariateExperiment, VARIATION_MULTIVARIATE_EXPERIMENT_GRED, FeatureDecision.DecisionSource.FEATURE_TEST);
         doReturn(DecisionResponse.responseNoReasons(featureDecision)).when(mockDecisionService).getVariationForFeature(
             FEATURE_FLAG_MULTI_VARIATE_FEATURE,

core-api/src/test/java/com/optimizely/ab/bucketing/DecisionServiceTest.java

@@ -98,13 +98,13 @@ public void getVariationWhitelistedPrecedesAudienceEval() throws Exception {
             experiment,
             optimizely.createUserContext(
                 genericUserId,
-                null),
+                Collections.emptyMap()),
             validProjectConfig).getResult());
 
         logbackVerifier.expectMessage(Level.INFO, "User \"" + whitelistedUserId + "\" is forced in variation \"vtag1\".");
 
         // no attributes provided for a experiment that has an audience
-        assertThat(decisionService.getVariation(experiment, optimizely.createUserContext(whitelistedUserId, null), validProjectConfig).getResult(), is(expectedVariation));
+        assertThat(decisionService.getVariation(experiment, optimizely.createUserContext(whitelistedUserId, Collections.emptyMap()), validProjectConfig).getResult(), is(expectedVariation));
 
         verify(decisionService).getWhitelistedVariation(eq(experiment), eq(whitelistedUserId));
         verify(decisionService, never()).getStoredVariation(eq(experiment), any(UserProfile.class), any(ProjectConfig.class));