remove unused methods in ScConditionalFormat

Change-Id: I36e57f8eac028e72fedd81a5fb05698ff1c57fe0

sc/inc/conditio.hxx

@@ -335,7 +335,6 @@ class SC_DLLPUBLIC ScConditionalFormat
 
     typedef boost::ptr_vector<ScFormatEntry> CondFormatContainer;
     CondFormatContainer maEntries;
-    bool                bIsUsed;            // temporary at Save
     ScRangeList maRanges;            // Ranges for conditional format
 
 public:
@@ -378,9 +377,6 @@ public:
     sal_uInt32      GetKey() const          { return nKey; }
     void            SetKey(sal_uInt32 nNew) { nKey = nNew; }    // only if not inserted!
 
-    void            SetUsed(bool bSet)      { bIsUsed = bSet; }
-    bool            IsUsed() const          { return bIsUsed; }
-
     bool            MarkUsedExternalReferences() const;
 
 #if DUMP_FORMAT_INFO