remove unused enum storeAccessMode value

Change-Id: I88a53e285cc3e8b6cc1c67b1e56322a918554de6
Reviewed-on: https://gerrit.libreoffice.org/64087
Tested-by: Jenkins
Reviewed-by: Noel Grandin <noel.grandin@collabora.co.uk>

compilerplugins/clang/unusedenumconstants.readonly.results

@@ -412,8 +412,6 @@ include/sfx2/objsh.hxx:121
     enum SfxObjectShellFlags NODOCINFO
 include/sfx2/viewsh.hxx:101
     enum SfxViewShellFlags NO_SHOW
-include/store/types.h:65
-    enum storeAccessMode ReadCreate
 include/svl/ctloptions.hxx:64
     enum SvtCTLOptions::TextNumerals NUMERALS_HINDI
 include/svl/ctloptions.hxx:65

include/store/types.h

@@ -62,7 +62,6 @@ extern "C" {
 enum class storeAccessMode
 {
     Create,
-    ReadCreate,
     ReadWrite,
     ReadOnly,
     FORCE_EQUAL_SIZE = SAL_MAX_ENUM

store/source/lockbyte.cxx

@@ -199,7 +199,6 @@ struct FileHandle
         switch (eAccessMode)
         {
         case storeAccessMode::Create:
-        case storeAccessMode::ReadCreate:
             nFlags |= osl_File_OpenFlag_Create;
             SAL_FALLTHROUGH;
         case storeAccessMode::ReadWrite: