use hardcoded style url for this simple test to avoid dependency on any setup (#144)

platform/android/MapboxGLAndroidSDK/src/test/java/com/mapbox/mapboxsdk/maps/StyleBuilderTest.kt

@@ -20,7 +20,7 @@ class StyleBuilderTest {
 
     @Test
     fun testFromUrl() {
-        val expected = Style.getPredefinedStyle("Streets")
+        val expected = "https://demotiles.maplibre.org/style.json"
         val builder = Style.Builder()
         builder.fromUrl(expected)
         assertEquals(expected, builder.uri)