[sqlite] Remove obsolete reference version 3.8.7.4.

third_party/sqlite/sqlite-src-3080704/tool/diffdb.c

-/*
-** A utility for printing the differences between two SQLite database files.
-*/
-#include <stdio.h>
-#include <ctype.h>
-#include <sys/types.h>
-#include <sys/stat.h>
-#include <fcntl.h>
-#include <unistd.h>
-#include <stdlib.h>
-
-
-#define PAGESIZE 1024
-static int db1 = -1;
-static int db2 = -1;
-
-int main(int argc, char **argv){
-  int iPg;
-  unsigned char a1[PAGESIZE], a2[PAGESIZE];
-  if( argc!=3 ){
-    fprintf(stderr,"Usage: %s FILENAME FILENAME\n", argv[0]);
-    exit(1);
-  }
-  db1 = open(argv[1], O_RDONLY);
-  if( db1<0 ){
-    fprintf(stderr,"%s: can't open %s\n", argv[0], argv[1]);
-    exit(1);
-  }
-  db2 = open(argv[2], O_RDONLY);
-  if( db2<0 ){
-    fprintf(stderr,"%s: can't open %s\n", argv[0], argv[2]);
-    exit(1);
-  }
-  iPg = 1;
-  while( read(db1, a1, PAGESIZE)==PAGESIZE && read(db2,a2,PAGESIZE)==PAGESIZE ){
-    if( memcmp(a1,a2,PAGESIZE) ){
-      printf("Page %d\n", iPg);
-    }
-    iPg++;
-  }
-  printf("%d pages checked\n", iPg-1);
-  close(db1);
-  close(db2);
-}