minor clean-up. SurfaceFlinger doesn't need libpixelflinger.so. (DO NOT MERGE)

Change-Id: I1ddbbbec4fa5b2521ef3787bc28efe1bc90d0060
diff --git a/include/surfaceflinger/Surface.h b/include/surfaceflinger/Surface.h
index 22684db..7b2a7f5 100644
--- a/include/surfaceflinger/Surface.h
+++ b/include/surfaceflinger/Surface.h
@@ -248,7 +248,7 @@
             uint32_t *pWidth, uint32_t *pHeight,
             uint32_t *pFormat, uint32_t *pUsage) const;
 
-    static void cleanCachedSurfaces();
+    static void cleanCachedSurfacesLocked();
 
     class BufferInfo {
         uint32_t mWidth;