remove support for glReadPixels screenshot path

this was only needed on some chipset we're not
supporting in KLP.

Change-Id: I2e8fc07f135030bd61d2e241a8e426f1a4316425
diff --git a/libs/gui/ISurfaceComposer.cpp b/libs/gui/ISurfaceComposer.cpp
index 6442a86..a9217ca 100644
--- a/libs/gui/ISurfaceComposer.cpp
+++ b/libs/gui/ISurfaceComposer.cpp
@@ -105,8 +105,7 @@
     virtual status_t captureScreen(const sp<IBinder>& display,
             const sp<IGraphicBufferProducer>& producer,
             uint32_t reqWidth, uint32_t reqHeight,
-            uint32_t minLayerZ, uint32_t maxLayerZ,
-            bool isCpuConsumer)
+            uint32_t minLayerZ, uint32_t maxLayerZ)
     {
         Parcel data, reply;
         data.writeInterfaceToken(ISurfaceComposer::getInterfaceDescriptor());
@@ -116,7 +115,6 @@
         data.writeInt32(reqHeight);
         data.writeInt32(minLayerZ);
         data.writeInt32(maxLayerZ);
-        data.writeInt32(isCpuConsumer);
         remote()->transact(BnSurfaceComposer::CAPTURE_SCREEN, data, &reply);
         return reply.readInt32();
     }
@@ -275,10 +273,8 @@
             uint32_t reqHeight = data.readInt32();
             uint32_t minLayerZ = data.readInt32();
             uint32_t maxLayerZ = data.readInt32();
-            bool isCpuConsumer = data.readInt32();
             status_t res = captureScreen(display, producer,
-                    reqWidth, reqHeight, minLayerZ, maxLayerZ,
-                    isCpuConsumer);
+                    reqWidth, reqHeight, minLayerZ, maxLayerZ);
             reply->writeInt32(res);
         } break;
         case AUTHENTICATE_SURFACE: {
diff --git a/libs/gui/SurfaceComposerClient.cpp b/libs/gui/SurfaceComposerClient.cpp
index 048553c..e067479 100644
--- a/libs/gui/SurfaceComposerClient.cpp
+++ b/libs/gui/SurfaceComposerClient.cpp
@@ -618,8 +618,7 @@
     sp<ISurfaceComposer> s(ComposerService::getComposerService());
     if (s == NULL) return NO_INIT;
     return s->captureScreen(display, producer,
-            reqWidth, reqHeight, minLayerZ, maxLayerZ,
-            false);
+            reqWidth, reqHeight, minLayerZ, maxLayerZ);
 }
 
 ScreenshotClient::ScreenshotClient()
@@ -654,7 +653,7 @@
     }
 
     status_t err = s->captureScreen(display, mBufferQueue,
-            reqWidth, reqHeight, minLayerZ, maxLayerZ, true);
+            reqWidth, reqHeight, minLayerZ, maxLayerZ);
 
     if (err == NO_ERROR) {
         err = mCpuConsumer->lockNextBuffer(&mBuffer);