gfxstream: nuke ResourceTracker::Impl

The big giant Vulkan singleton might have an underlying
implementation.  However, it's unlikely we'll have more than
impl since it it's pretty giant.  Nuke ResourceTracker::Impl
to reduce the number of layers one must traverse to modify
things.

Since this was mega-change, clang-format was also applied.

BUG=296903491
TEST=compile + guest ANGLE

Change-Id: Ia9609b64f200f99bc7fd03f0da9b881a31e7d635
diff --git a/guest/vulkan_enc/Android.bp b/guest/vulkan_enc/Android.bp
index 72250b5..8d48787 100644
--- a/guest/vulkan_enc/Android.bp
+++ b/guest/vulkan_enc/Android.bp
@@ -90,4 +90,4 @@
             ],
         }
     }
-}
\ No newline at end of file
+}