Remove isPositive verification for point coordinates

Author: Mykola Mokhnach

src/main/java/io/appium/java_client/touch/offset/PointOption.java

@@ -1,7 +1,5 @@
 package io.appium.java_client.touch.offset;
 
-import static com.google.common.base.Preconditions.checkArgument;
-import static java.lang.String.format;
 import static java.util.Optional.ofNullable;
 
 import io.appium.java_client.touch.ActionOptions;
@@ -13,8 +11,6 @@ public class PointOption<T extends PointOption<T>> extends ActionOptions<T> {
 
     protected Point coordinates;
 
-    private static final String ERROR_MESSAGE_TEMPLATE = "%s coordinate value should be equal or greater than zero";
-
     /**
      * It creates a built instance of {@link PointOption} which takes x and y coordinates.
      * This is offset from the upper left corner of the screen.
@@ -36,14 +32,14 @@ public static PointOption point(int xOffset, int yOffset) {
      * @return self-reference
      */
     public T withCoordinates(int xOffset, int yOffset) {
-        checkArgument(xOffset >= 0, format(ERROR_MESSAGE_TEMPLATE, "X"));
-        checkArgument(yOffset >= 0, format(ERROR_MESSAGE_TEMPLATE, "Y"));
         coordinates = new Point(xOffset, yOffset);
+        //noinspection unchecked
         return (T) this;
     }
 
     @Override
     protected void verify() {
+        //noinspection ResultOfMethodCallIgnored
         ofNullable(coordinates).orElseThrow(() -> new IllegalArgumentException(
                 "Coordinate values must be defined"));
     }