Remove useless conditions

Author: liry

gooddata-java-model/src/main/java/com/gooddata/sdk/model/featureflag/FeatureFlags.java

@@ -79,16 +79,13 @@ private Optional<FeatureFlag> findFlag(final String flagName) {
     public boolean equals(final Object o) {
         if (this == o) return true;
         if (o == null || getClass() != o.getClass()) return false;
-
         final FeatureFlags that = (FeatureFlags) o;
-
-        return !(featureFlags != null ? !featureFlags.equals(that.featureFlags) : that.featureFlags != null);
-
+        return featureFlags.equals(that.featureFlags);
     }
 
     @Override
     public int hashCode() {
-        return featureFlags != null ? featureFlags.hashCode() : 0;
+        return featureFlags.hashCode();
     }
 
     @Override

gooddata-java/src/main/java/com/gooddata/sdk/service/featureflag/FeatureFlagService.java

@@ -108,13 +108,7 @@ public ProjectFeatureFlag getProjectFeatureFlag(final Project project, final Str
         notEmpty(featureFlagName, "featureFlagName");
 
         try {
-            final ProjectFeatureFlag flag = getProjectFeatureFlag(getProjectFeatureFlagUri(project, featureFlagName));
-
-            if (flag == null) {
-                throw new GoodDataException("empty response from API call");
-            }
-
-            return flag;
+            return getProjectFeatureFlag(getProjectFeatureFlagUri(project, featureFlagName));
         } catch (GoodDataException | RestClientException e) {
             throw new GoodDataException("Unable to get project feature flag: " + featureFlagName, e);
         }