SOCKET_USE_AUTODIAL is dead code

...ever since 010f7113 "INTEGRATION: CWS sal01:
#105958# Remove usage of wininet.dll autodial functions" wrapped its central
code in

  #ifdef SOCKET_USE_AUTODIAL

instead of removing it properly.

Change-Id: I4c077c71ce8eda3a3f8b83286178d0d7907a6e02
Reviewed-on: https://gerrit.libreoffice.org/29742Tested-by: Jenkins <ci@libreoffice.org>
Reviewed-by: Stephan Bergmann <sbergman@redhat.com>

sal/osl/w32/sockimpl.h

@@ -47,37 +47,6 @@ struct oslSocketAddrImpl
 oslSocket osl_createSocketImpl_(SOCKET Socket);
 void osl_destroySocketImpl_(oslSocket pImpl);
 
-/*****************************************************************************/
-/* oslSocketDialupImpl */
-/*****************************************************************************/
-#define INTERNET_MODULE_NAME "wininet.dll"
-
-#define INTERNET_CONNECTION_HANGUP 0x80000000L
-
-typedef DWORD (WINAPI *INTERNETATTEMPTCONNECT) (
-    DWORD dwReserved);
-typedef BOOL (WINAPI *INTERNETAUTODIAL) (
-    DWORD dwFlags, DWORD dwReserved);
-typedef BOOL (WINAPI *INTERNETAUTODIALHANGUP) (
-    DWORD dwReserved);
-typedef BOOL (WINAPI *INTERNETGETCONNECTEDSTATE) (
-    LPDWORD lpdwFlags, DWORD dwReserved);
-
-typedef struct osl_socket_dialup_impl_st
-{
-    CRITICAL_SECTION          m_hMutex;
-    HINSTANCE                 m_hModule;
-    INTERNETATTEMPTCONNECT    m_pfnAttemptConnect;
-    INTERNETAUTODIAL          m_pfnAutodial;
-    INTERNETAUTODIALHANGUP    m_pfnAutodialHangup;
-    INTERNETGETCONNECTEDSTATE m_pfnGetConnectedState;
-    DWORD                     m_dwFlags;
-} oslSocketDialupImpl;
-
-/*****************************************************************************/
-/* The End */
-/*****************************************************************************/
-
 #ifdef __cplusplus
 }
 #endif