Remove unnecessary clients and rename files.

- Remove clients for obsolete services.
- Rename display protocol defs file to match purpose.
- Rename display manager client file. "impl" does not match naming
  conventions used by DVR libraries.
- Remove video mesh surface interface. This will be replaced by more
  general surface support in the unified O compositor.

Bug: 36401174
Test: Build; run cube sea.
Change-Id: Idb782623319329f6fa1b0aa45005d9fee3b9957d
diff --git a/libs/vr/libdisplay/display_protocol.cpp b/libs/vr/libdisplay/display_protocol.cpp
new file mode 100644
index 0000000..e96394c
--- /dev/null
+++ b/libs/vr/libdisplay/display_protocol.cpp
@@ -0,0 +1,12 @@
+#include "include/private/dvr/display_protocol.h"
+
+namespace android {
+namespace dvr {
+
+constexpr char DisplayRPC::kClientPath[];
+constexpr char DisplayManagerRPC::kClientPath[];
+constexpr char DisplayScreenshotRPC::kClientPath[];
+constexpr char DisplayVSyncRPC::kClientPath[];
+
+} // namespace dvr
+} // namespace android