[WIDL] Remove a hack that inserted WIN32_LEAN_AND_MEAN into headers

This was supposedly to improve compile times, but it breaks our headers.

base/services/netlogon/CMakeLists.txt

@@ -3,6 +3,8 @@ include_directories(${REACTOS_SOURCE_DIR}/sdk/include/reactos/idl)
 add_rpc_files(server ${REACTOS_SOURCE_DIR}/sdk/include/reactos/idl/netlogon.idl)
 spec2def(netlogon.dll netlogon.spec ADD_IMPORTLIB)
 
+add_definitions(-DWIN32_LEAN_AND_MEAN=)
+
 list(APPEND SOURCE
     netlogon.c
     rpcserver.c

dll/win32/netapi32/CMakeLists.txt

@@ -12,6 +12,8 @@ add_rpc_files(client
     ${REACTOS_SOURCE_DIR}/sdk/include/reactos/idl/srvsvc.idl
     ${REACTOS_SOURCE_DIR}/sdk/include/reactos/idl/wkssvc.idl)
 
+add_definitions(-DWIN32_LEAN_AND_MEAN=)
+
 list(APPEND SOURCE
     apibuf.c
     browser.c

modules/rostests/winetests/hlink/CMakeLists.txt

@@ -1,5 +1,5 @@
 
-add_definitions(-DUSE_WINE_TODOS)
+add_definitions(-DUSE_WINE_TODOS -DWIN32_LEAN_AND_MEAN=)
 
 list(APPEND SOURCE
     browse_ctx.c

sdk/tools/widl/header.c

@@ -2095,15 +2095,7 @@ void write_header(const statement_list_t *stmts)
   fprintf(header, "#ifdef _WIN32\n");
   fprintf(header, "#ifndef __REQUIRED_RPCNDR_H_VERSION__\n");
   fprintf(header, "#define __REQUIRED_RPCNDR_H_VERSION__ 475\n");
-#ifdef __REACTOS__
-  fprintf(header, "#endif\n\n");
-
-  fprintf(header, "#ifdef __REACTOS__\n");
-  fprintf(header, "#define WIN32_LEAN_AND_MEAN\n");
-  fprintf(header, "#endif\n\n");
-#else
   fprintf(header, "#endif\n");
-#endif
   fprintf(header, "#include <rpc.h>\n" );
   fprintf(header, "#include <rpcndr.h>\n" );
   if (!for_each_serializable(stmts, NULL, serializable_exists))