removed redundant class

android/app/src/main/java/com/reactnativenavigation/screens/Screen.java

 import com.reactnativenavigation.params.StyleParams;
 import com.reactnativenavigation.params.TitleBarButtonParams;
 import com.reactnativenavigation.params.TitleBarLeftButtonParams;
-import com.reactnativenavigation.utils.SdkSupports;
 import com.reactnativenavigation.utils.ViewUtils;
 import com.reactnativenavigation.views.TitleBarBackButtonListener;
 import com.reactnativenavigation.views.TopBar;
 
     @TargetApi(Build.VERSION_CODES.LOLLIPOP)
     private void setStatusBarColor(StyleParams.Color statusBarColor) {
-        if (!SdkSupports.lollipop()) {
-            return;
-        }
+        if (Build.VERSION.SDK_INT < Build.VERSION_CODES.LOLLIPOP) return;
 
         final Activity context = (Activity) getContext();
         final Window window = context.getWindow();
 
     @TargetApi(Build.VERSION_CODES.LOLLIPOP)
     public void setNavigationBarColor(StyleParams.Color navigationBarColor) {
-        if (!SdkSupports.lollipop()) {
-            return;
-        }
+        if (Build.VERSION.SDK_INT < Build.VERSION_CODES.LOLLIPOP) return;
 
         final Activity context = (Activity) getContext();
         final Window window = context.getWindow();

android/app/src/main/java/com/reactnativenavigation/utils/SdkSupports.java

-package com.reactnativenavigation.utils;
-
-import android.os.Build;
-
-public class SdkSupports {
-
-    public static boolean lollipop() {
-        return Build.VERSION.SDK_INT >= Build.VERSION_CODES.LOLLIPOP;
-    }
-
-    public static boolean marshmallow() {
-        return Build.VERSION.SDK_INT >= Build.VERSION_CODES.M;
-    }
-}