SF: remove IComposer.dumpDebugInfo

aidl already have a dump funciton, so there is no need to
expose a custom dumpDebugInfo from IComposer.

Bug: 220171623
Test: atest VtsHalGraphicsComposer3_TargetTest
Test: adb shell dumpsys SurfaceFlinger
Test: adb shell dumpsys android.hardware.graphics.composer3.IComposer/default
Change-Id: Ifaf91e74b01230c5926fc43619cada80deaa1630
diff --git a/services/surfaceflinger/SurfaceFlinger.cpp b/services/surfaceflinger/SurfaceFlinger.cpp
index 59c07b6..4e5e6aa 100644
--- a/services/surfaceflinger/SurfaceFlinger.cpp
+++ b/services/surfaceflinger/SurfaceFlinger.cpp
@@ -5341,7 +5341,7 @@
     colorizer.reset(result);
     const bool hwcDisabled = mDebugDisableHWC || mDebugFlashDelay;
     StringAppendF(&result, "  h/w composer %s\n", hwcDisabled ? "disabled" : "enabled");
-    getHwComposer().dump(result);
+    dumpHwc(result);
 
     /*
      * Dump gralloc state