Removes unused methods CRC::Empty() and CRC::Concat() from the internal

implementation.

PiperOrigin-RevId: 539749773
Change-Id: Iec83431ffd360a077b153cea00427580ae287d1f

1 files changed, 0 insertions, 8 deletions

diff --git a/absl/crc/internal/crc.h b/absl/crc/internal/crc.h
index e683c25f..4efdd032 100644
--- a/absl/crc/internal/crc.h
+++ b/absl/crc/internal/crc.h
@@ -40,9 +40,6 @@ class CRC {
  public:
   virtual ~CRC();
 
-  // Place the CRC of the empty string in "*crc"
-  virtual void Empty(uint32_t* crc) const = 0;
-
   // If "*crc" is the CRC of bytestring A, place the CRC of
   // the bytestring formed from the concatenation of A and the "length"
   // bytes at "bytes" into "*crc".
@@ -58,11 +55,6 @@ class CRC {
   // with those zero bytes removed.
   virtual void UnextendByZeroes(uint32_t* crc, size_t length) const = 0;
 
-  // If *px is the CRC (as defined by *crc) of some string X,
-  // and y is the CRC of some string Y that is ylen bytes long, set
-  // *px to the CRC of the concatenation of X followed by Y.
-  virtual void Concat(uint32_t* px, uint32_t y, size_t ylen);
-
   // Apply a non-linear transformation to "*crc" so that
   // it is safe to CRC the result with the same polynomial without
   // any reduction of error-detection ability in the outer CRC.