graphics: remove duplicated types

Remove duplicated types from allocator@2.0 and composer@2.1.  Those types
are now in common@1.0.

Bug: 32238126
Test: builds and boots
Change-Id: Ibdb907e47969f5a5a98a14a2e2b77a9c5880beff
diff --git a/graphics/composer/2.1/IComposer.hal b/graphics/composer/2.1/IComposer.hal
index 7bfa22b..dd61c11 100644
--- a/graphics/composer/2.1/IComposer.hal
+++ b/graphics/composer/2.1/IComposer.hal
@@ -16,7 +16,7 @@
 
 package android.hardware.graphics.composer@2.1;
 
-import android.hardware.graphics.allocator@2.0::PixelFormat;
+import android.hardware.graphics.common@1.0;
 import IComposerCallback;
 
 interface IComposer {
@@ -845,7 +845,7 @@
      */
 
     /*
-     * Asynchonously sets the position of a cursor layer.
+     * Asynchronously sets the position of a cursor layer.
      *
      * Prior to validateDisplay, a layer may be marked as Composition::CURSOR.
      * If validation succeeds (i.e., the device does not request a composition