Remove local and hybrid HALs

Those aren't used anymore.

Test: m
Change-Id: I2cf326f042d7ada195cc246c3547c8825a92ab98
diff --git a/media/libaudiohal/impl/DevicesFactoryHalHidl.cpp b/media/libaudiohal/impl/DevicesFactoryHalHidl.cpp
index f475729..8f3c907 100644
--- a/media/libaudiohal/impl/DevicesFactoryHalHidl.cpp
+++ b/media/libaudiohal/impl/DevicesFactoryHalHidl.cpp
@@ -227,4 +227,10 @@
     return mDeviceFactories;
 }
 
+// Main entry-point to the shared library.
+extern "C" __attribute__((visibility("default"))) void* createIDevicesFactory() {
+    auto service = hardware::audio::CPP_VERSION::IDevicesFactory::getService();
+    return service ? new DevicesFactoryHalHidl(service) : nullptr;
+}
+
 } // namespace android