[sqlite] Remove obsolete reference version 3.8.7.4.

third_party/sqlite/sqlite-src-3080704/test/tt3_index.c

-/*
-** 2014 December 9
-**
-** The author disclaims copyright to this source code.  In place of
-** a legal notice, here is a blessing:
-**
-**    May you do good and not evil.
-**    May you find forgiveness for yourself and forgive others.
-**    May you share freely, never taking more than you give.
-**
-*************************************************************************
-**
-**     create_drop_index_1
-*/
-
-
-static char *create_drop_index_thread(int iTid, int iArg){
-  Error err = {0};                /* Error code and message */
-  Sqlite db = {0};                /* SQLite database connection */
-
-  while( !timetostop(&err) ){
-    opendb(&err, &db, "test.db", 0);
-
-    sql_script(&err, &db, 
-
-      "DROP INDEX IF EXISTS i1;"
-      "DROP INDEX IF EXISTS i2;"
-      "DROP INDEX IF EXISTS i3;"
-      "DROP INDEX IF EXISTS i4;"
-
-      "CREATE INDEX IF NOT EXISTS i1 ON t1(a);"
-      "CREATE INDEX IF NOT EXISTS i2 ON t1(b);"
-      "CREATE INDEX IF NOT EXISTS i3 ON t1(c);"
-      "CREATE INDEX IF NOT EXISTS i4 ON t1(d);"
-
-      "SELECT * FROM t1 ORDER BY a;"
-      "SELECT * FROM t1 ORDER BY b;"
-      "SELECT * FROM t1 ORDER BY c;"
-      "SELECT * FROM t1 ORDER BY d;"
-    );
-
-    closedb(&err, &db);
-  }
-
-  print_and_free_err(&err);
-  return sqlite3_mprintf("ok");
-}
-
-static void create_drop_index_1(int nMs){
-  Error err = {0};
-  Sqlite db = {0};
-  Threadset threads = {0};
-
-  opendb(&err, &db, "test.db", 1);
-  sql_script(&err, &db, 
-     "CREATE TABLE t1(a, b, c, d);"
-     "WITH data(x) AS (SELECT 1 UNION ALL SELECT x+1 FROM data WHERE x<100) "
-     "INSERT INTO t1 SELECT x,x,x,x FROM data;"
-  );
-  closedb(&err, &db);
-
-  setstoptime(&err, nMs);
-
-  sqlite3_enable_shared_cache(1);
-  launch_thread(&err, &threads, create_drop_index_thread, 0);
-  launch_thread(&err, &threads, create_drop_index_thread, 0);
-  launch_thread(&err, &threads, create_drop_index_thread, 0);
-  launch_thread(&err, &threads, create_drop_index_thread, 0);
-  launch_thread(&err, &threads, create_drop_index_thread, 0);
-  sqlite3_enable_shared_cache(0);
-
-  join_all_threads(&err, &threads);
-  print_and_free_err(&err);
-}