prayer: don't return dimension for dynamic overlays

The returned dimension is only used for layoutable or movable overlays

runelite-client/src/main/java/net/runelite/client/plugins/prayer/PrayerBarOverlay.java

@@ -116,7 +116,7 @@ class PrayerBarOverlay extends Overlay
 				graphics.fillRect(barX + xOffset, barY + HD_PRAYER_BAR_PADDING, 1, barHeight - HD_PRAYER_BAR_PADDING * 2);
 			}
 
-			return new Dimension(barWidth, barHeight);
+			return null;
 		}
 
 		// Draw bar
@@ -145,7 +145,7 @@ class PrayerBarOverlay extends Overlay
 			graphics.fillRect(barX + xOffset, barY, 1, barHeight);
 		}
 
-		return new Dimension(barWidth, barHeight);
+		return null;
 	}
 
 	void onTick()

runelite-client/src/main/java/net/runelite/client/plugins/prayer/PrayerDoseOverlay.java

@@ -151,8 +151,7 @@ class PrayerDoseOverlay extends Overlay
 		graphics.setColor(ColorUtil.colorLerp(START_COLOR, END_COLOR, Math.sin(t)));
 		graphics.setStroke(new BasicStroke(2));
 		graphics.drawOval(orbInnerX, orbInnerY, orbInnerSize, orbInnerSize);
-
-		return new Dimension((int) bounds.getWidth(), (int) bounds.getHeight());
+		return null;
 	}
 
 }

runelite-client/src/main/java/net/runelite/client/plugins/prayer/PrayerFlickOverlay.java

@@ -91,7 +91,6 @@ class PrayerFlickOverlay extends Overlay
 
 		graphics.setColor(Color.cyan);
 		graphics.fillRect(orbInnerX + xOffset, orbInnerY + yOffset, 1, indicatorHeight);
-
-		return new Dimension((int) bounds.getWidth(), (int) bounds.getHeight());
+		return null;
 	}
 }