Clean up dead code related to IGBP

SF no longer creates IGBP for clients since blast was rolled out.
This cl cleans up some dead code related to IGBPs.

Test: presubmit
Bug: 294915480
Change-Id: I60bae115b77527f31db514fe58c67bce4e2b3592
diff --git a/services/surfaceflinger/SurfaceFlinger.cpp b/services/surfaceflinger/SurfaceFlinger.cpp
index 31d120d..fe5b159 100644
--- a/services/surfaceflinger/SurfaceFlinger.cpp
+++ b/services/surfaceflinger/SurfaceFlinger.cpp
@@ -492,14 +492,6 @@
     mSupportsBlur = supportsBlurs;
     ALOGI_IF(!mSupportsBlur, "Disabling blur effects, they are not supported.");
 
-    const size_t defaultListSize = MAX_LAYERS;
-    auto listSize = property_get_int32("debug.sf.max_igbp_list_size", int32_t(defaultListSize));
-    mMaxGraphicBufferProducerListSize = (listSize > 0) ? size_t(listSize) : defaultListSize;
-    mGraphicBufferProducerListSizeLogThreshold =
-            std::max(static_cast<int>(0.95 *
-                                      static_cast<double>(mMaxGraphicBufferProducerListSize)),
-                     1);
-
     property_get("debug.sf.luma_sampling", value, "1");
     mLumaSampling = atoi(value);
 
diff --git a/services/surfaceflinger/SurfaceFlinger.h b/services/surfaceflinger/SurfaceFlinger.h
index b23b519..6ae05d6 100644
--- a/services/surfaceflinger/SurfaceFlinger.h
+++ b/services/surfaceflinger/SurfaceFlinger.h
@@ -1212,12 +1212,6 @@
     float mGlobalSaturationFactor = 1.0f;
     mat4 mClientColorMatrix;
 
-    size_t mMaxGraphicBufferProducerListSize = MAX_LAYERS;
-    // If there are more GraphicBufferProducers tracked by SurfaceFlinger than
-    // this threshold, then begin logging.
-    size_t mGraphicBufferProducerListSizeLogThreshold =
-            static_cast<size_t>(0.95 * static_cast<double>(MAX_LAYERS));
-
     // protected by mStateLock (but we could use another lock)
     bool mLayersRemoved = false;
     bool mLayersAdded = false;