Remove deprecated Ozone initialization functions.

ui/ozone/platform/wayland/ozone_platform_wayland.cc

Index: ui/ozone/platform/wayland/ozone_platform_wayland.cc
diff --git a/ui/ozone/platform/wayland/ozone_platform_wayland.cc b/ui/ozone/platform/wayland/ozone_platform_wayland.cc
index 0e3e4235657fa69e166d11bf265a2ef9be8b7231..f3c939a0f99b5cb7b874b4e9eb894695a3ef3980 100644
--- a/ui/ozone/platform/wayland/ozone_platform_wayland.cc
+++ b/ui/ozone/platform/wayland/ozone_platform_wayland.cc
@@ -74,11 +74,6 @@ class OzonePlatformWayland : public OzonePlatform {
     return base::MakeUnique<display::FakeDisplayDelegate>();
   }
 
-  void InitializeUI() override {
-    InitParams default_params;
-    InitializeUI(default_params);
-  }
-
   void InitializeUI(const InitParams& args) override {
     connection_.reset(new WaylandConnection);
     if (!connection_->Initialize())
@@ -100,11 +95,6 @@ class OzonePlatformWayland : public OzonePlatform {
     gpu_platform_support_host_.reset(CreateStubGpuPlatformSupportHost());
   }
 
-  void InitializeGPU() override {
-    InitParams default_params;
-    InitializeGPU(default_params);
-  }
-
   void InitializeGPU(const InitParams& args) override {
     // TODO(fwang): args.single_process parameter should be checked here; make
     // sure callers pass in the proper value. Once it happens, the check whether