Remove unnecessary declarations and make functions static.

diff --git a/dlls/ole32/compobj_private.h b/dlls/ole32/compobj_private.h
index 2db5f66..5e3df82 100644
--- a/dlls/ole32/compobj_private.h
+++ b/dlls/ole32/compobj_private.h
@@ -203,7 +203,7 @@
 HRESULT WINAPI RunningObjectTableImpl_UnInitialize(void);
 
 /* This function decomposes a String path to a String Table containing all the elements ("\" or "subDirectory" or "Directory" or "FileName") of the path */
-int WINAPI FileMonikerImpl_DecomposePath(LPCOLESTR str, LPOLESTR** stringTable);
+int FileMonikerImpl_DecomposePath(LPCOLESTR str, LPOLESTR** stringTable);
 
 
 /* Apartment Functions */