DataFlash: removed more unusued BufferRead functions

libraries/DataFlash/DataFlash_Empty.cpp

@@ -60,10 +60,6 @@ void DataFlash_Empty::BufferWrite (unsigned char BufferNum,
         uint16_t IntPageAdr, unsigned char Data)
 { }
 
-unsigned char DataFlash_Empty::BufferRead (unsigned char BufferNum,
-        uint16_t IntPageAdr)
-{ return 0; }
-
 void DataFlash_Empty::BlockWrite(uint8_t BufferNum, uint16_t IntPageAdr, 
                     const void *pHeader, uint8_t hdr_size,
                     const void *pBuffer, uint16_t size)

libraries/DataFlash/DataFlash_Empty.h

@@ -13,7 +13,6 @@ class DataFlash_Empty : public DataFlash_Block
 {
 private:
     //Methods
-    uint8_t           BufferRead (uint8_t BufferNum, uint16_t IntPageAdr);
     void              BufferWrite (uint8_t BufferNum, uint16_t IntPageAdr, uint8_t Data);
     void              BufferToPage (uint8_t BufferNum, uint16_t PageAdr, uint8_t wait);
     void              PageToBuffer(uint8_t BufferNum, uint16_t PageAdr);

libraries/DataFlash/DataFlash_SITL.cpp

@@ -119,11 +119,6 @@ void DataFlash_SITL::BlockWrite(uint8_t BufferNum, uint16_t IntPageAdr,
            size);
 }
 
-unsigned char DataFlash_SITL::BufferRead (unsigned char BufferNum, uint16_t IntPageAdr)
-{
-	return (unsigned char)buffer[BufferNum][IntPageAdr];
-}
-
 // read size bytes of data to a page. The caller must ensure that
 // the data fits within the page, otherwise it will wrap to the
 // start of the page

libraries/DataFlash/DataFlash_SITL.h

@@ -13,7 +13,6 @@ class DataFlash_SITL : public DataFlash_Block
 {
 private:
     //Methods
-    uint8_t           BufferRead (uint8_t BufferNum, uint16_t IntPageAdr);
     void              BufferWrite (uint8_t BufferNum, uint16_t IntPageAdr, uint8_t Data);
     void              BufferToPage (uint8_t BufferNum, uint16_t PageAdr, uint8_t wait);
     void              PageToBuffer(uint8_t BufferNum, uint16_t PageAdr);