diff --git a/reactos/include/psdk/metahost.idl b/reactos/include/psdk/metahost.idl
index 549d664c5fa..51cd78415be 100644
--- a/reactos/include/psdk/metahost.idl
+++ b/reactos/include/psdk/metahost.idl
@@ -25,30 +25,6 @@ cpp_quote("#ifdef WINE_NO_UNICODE_MACROS")
 cpp_quote("#undef LoadLibrary")
 cpp_quote("#endif")
 
-typedef enum
-{
-    METAHOST_POLICY_HIGHCOMPAT              = 0,
-    METAHOST_POLICY_APPLY_UPGRADE_POLICY    = 0x08,
-    METAHOST_POLICY_EMULATE_EXE_LAUNCH      = 0x10,
-    METAHOST_POLICY_SHOW_ERROR_DIALOG       = 0x20,
-    METAHOST_POLICY_USE_PROCESS_IMAGE_PATH  = 0x40,
-    METAHOST_POLICY_ENSURE_SKU_SUPPORTED    = 0x80
-} METAHOST_POLICY_FLAGS;
-
-typedef enum
-{
-    CLR_DEBUGGING_MANAGED_EVENT_PENDING     = 1
-} CLR_DEBUGGING_PROCESS_FLAGS;
-
-typedef struct _CLR_DEBUGGING_VERSION
-{
-    WORD wStructVersion;
-    WORD wMajor;
-    WORD wMinor;
-    WORD wBuild;
-    WORD wRevision;
-} CLR_DEBUGGING_VERSION;
-
 [
     object,
     local,
@@ -152,55 +128,4 @@ interface ICLRMetaHost : IUnknown
         [in] INT32 iExitCode);
 };
 
-[
-    object,
-    local,
-    uuid(e2190695-77b2-492e-8e14-c4b3a7fdd593)
-]
-interface ICLRMetaHostPolicy : IUnknown
-{
-    HRESULT GetRequestedRuntime([in] METAHOST_POLICY_FLAGS dwPolicyFlags,
-        [in] LPCWSTR pwzBinary, [in] IStream *pCfgStream,
-        [in, out] LPWSTR pwzVersion, [in, out] DWORD *pcchVersion,
-        [out] LPWSTR pwzImageVersion, [out, in] DWORD *pcchImageVersion,
-        [out] DWORD *pdwConfigFlags, [in] REFIID riid, [retval, out] LPVOID *ppRuntime);
-}
-
-[
-    uuid(2ebcd49a-1b47-4a61-b13a-4a03701e594b)
-]
-coclass CLRMetaHostPolicy
-{
-    [default] interface ICLRMetaHostPolicy;
-}
-
-[
-    object,
-    local,
-    uuid(3151c08d-4d09-4f9b-8838-2880bf18fe51)
-]
-interface ICLRDebuggingLibraryProvider : IUnknown
-{
-    HRESULT ProvideLibrary([in] const WCHAR *pwszFileName,
-            [in] DWORD dwTimestamp, [in] DWORD dwSizeOfImage,
-            [out] HMODULE *phModule);
-}
-
-[
-    object,
-    local,
-    uuid(d28f3c5a-9634-4206-a509-477552eefb10)
-]
-interface ICLRDebugging : IUnknown
-{
-    HRESULT OpenVirtualProcess([in] ULONG64 moduleBaseAddress,
-            [in] IUnknown *pDataTarget, [in] ICLRDebuggingLibraryProvider *pLibraryProvider,
-            [in] CLR_DEBUGGING_VERSION *pMaxDebuggerSupportedVersion,
-            [in] REFIID riidProcess, [out] IUnknown **ppProcess,
-            [out, in] CLR_DEBUGGING_VERSION *pVersion,
-            [out] CLR_DEBUGGING_PROCESS_FLAGS *pdwFlags);
-
-    HRESULT CanUnloadNow(HMODULE hModule);
-}
-
 cpp_quote("HRESULT WINAPI CLRCreateInstance(REFCLSID clsid, REFIID riid, LPVOID *ppInterface);")