Remove references to wineprefixcreate.

dlls/dinput8/dinput8_main.c

@@ -66,7 +66,7 @@ HRESULT WINAPI DECLSPEC_HOTPATCH DirectInput8Create(HINSTANCE hinst, DWORD dwVer
     
     hr = CoCreateInstance( &CLSID_DirectInput8, punkOuter, CLSCTX_INPROC_SERVER, riid, ppDI);
     if(FAILED(hr)) {
-        ERR("CoCreateInstance failed with hr = %d; Try running wineprefixcreate to fix it.\n", hr);
+        ERR("CoCreateInstance failed with hr = %d\n", hr);
         return DIERR_INVALIDPARAM;
     }
 

dlls/hlink/tests/hlink.c

@@ -439,7 +439,7 @@ static void test_persist(void)
                                0, NULL, &IID_IHlink, (LPVOID*) &lnk);
     ok(hr == S_OK, "IHlinkCreateFromString failed with error 0x%08x\n", hr);
     if (!lnk) {
-        skip("Can't create lnk, skipping test_persist.  Was wineprefixcreate run properly?\n");
+        skip("Can't create lnk, skipping test_persist.\n");
         return;
     }
     test_persist_save_data("url only", lnk,

programs/winecfg/drivedetect.c

@@ -204,7 +204,7 @@ static void report_error(int code)
 
         case NO_DRIVE_C:
             if (gui_mode)
-                MessageBox(NULL, "No virtual drive C mapped\n\nTry running wineprefixcreate", "", MB_OK | MB_ICONEXCLAMATION);
+                MessageBox(NULL, "No virtual drive C mapped!\n", "", MB_OK | MB_ICONEXCLAMATION);
             else
                 fprintf(stderr, "winecfg: no drive_c directory\n");