sdk: unhide palette utilities

It does not make sense to hide away such lovely code.
Let it be used by others, given that it lives within
the sdk.

Change-Id: Iab4605e77fd3425049df68ebbeaa3bd247874795
Signed-off-by: Alexander Martinz <amartinz@shiftphones.com>

sdk/src/java/lineageos/util/palette/ColorCutQuantizer.java

@@ -29,8 +29,6 @@ import java.util.PriorityQueue;
  * have roughly the same population, where this quantizer divides boxes based on their color volume.
  * This means that the color space is divided into distinct colors, rather than representative
  * colors.
- *
- * @hide
  */
 final class ColorCutQuantizer {
 

sdk/src/java/lineageos/util/palette/ColorUtils.java

@@ -9,8 +9,6 @@ import android.graphics.Color;
 
 /**
  * A set of color-related utility methods, building upon those available in {@code Color}.
- *
- * @hide
  */
 public class ColorUtils {
 

sdk/src/java/lineageos/util/palette/DefaultGenerator.java

@@ -9,9 +9,6 @@ import lineageos.util.palette.Palette.Swatch;
 
 import java.util.List;
 
-/**
- * @hide
- */
 class DefaultGenerator extends Palette.Generator {
 
     private static final float TARGET_DARK_LUMA = 0.26f;

sdk/src/java/lineageos/util/palette/Palette.java

@@ -50,8 +50,6 @@ import java.util.List;
  *     }
  * });
  * </pre>
- *
- * @hide
  */
 public final class Palette {