Revert "graphics.common: add HSV format definition to 1.2"

This reverts commit 97e1a932ec52ce49e4c51527a6fce78bfa810294.

Reason for revert: broke build 

Change-Id: Ib264957e9a1de83c37e4129471b3c75522e21d08
diff --git a/graphics/composer/2.3/IComposerClient.hal b/graphics/composer/2.3/IComposerClient.hal
index a3b7792..cf78dea 100644
--- a/graphics/composer/2.3/IComposerClient.hal
+++ b/graphics/composer/2.3/IComposerClient.hal
@@ -17,7 +17,7 @@
 package android.hardware.graphics.composer@2.3;
 
 import android.hardware.graphics.common@1.1::RenderIntent;
-import android.hardware.graphics.common@1.2::PixelFormat;
+import android.hardware.graphics.common@1.1::PixelFormat;
 import android.hardware.graphics.common@1.2::ColorMode;
 import android.hardware.graphics.common@1.2::Dataspace;
 import android.hardware.graphics.common@1.2::Hdr;