[sql] Remove SQLite 3.10.2 reference directory.

third_party/sqlite/sqlite-src-3100200/tool/symbols-mingw.sh

-#!/bin/sh
-#
-# Run this script in a directory that contains a valid SQLite makefile in
-# order to verify that unintentionally exported symbols.
-#
-make sqlite3.c
-
-echo '****** Exported symbols from a build including RTREE && FTS4 ******'
-gcc -c -DSQLITE_ENABLE_FTS3 -DSQLITE_ENABLE_RTREE \
-  -DSQLITE_ENABLE_MEMORY_MANAGEMENT -DSQLITE_ENABLE_STAT3 \
-  -DSQLITE_ENABLE_MEMSYS5 -DSQLITE_ENABLE_UNLOCK_NOTIFY \
-  -DSQLITE_ENABLE_COLUMN_METADATA -DSQLITE_ENABLE_ATOMIC_WRITE \
-  sqlite3.c
-nm sqlite3.o | grep " [TD] "
-
-echo '****** Surplus symbols from a build including RTREE & FTS4 ******'
-nm sqlite3.o | grep " [TD] " | grep -v " .*sqlite3_"
-
-echo '****** Dependencies of the core. No extensions. No OS interface *******'
-gcc -c -DSQLITE_ENABLE_MEMORY_MANAGEMENT -DSQLITE_ENABLE_STAT3 \
-  -DSQLITE_ENABLE_MEMSYS5 -DSQLITE_ENABLE_UNLOCK_NOTIFY \
-  -DSQLITE_ENABLE_COLUMN_METADATA -DSQLITE_ENABLE_ATOMIC_WRITE \
-  -DSQLITE_OS_OTHER -DSQLITE_THREADSAFE=0 \
-  sqlite3.c
-nm sqlite3.o | grep " U "
-
-echo '****** Dependencies including RTREE & FTS4 *******'
-gcc -c -DSQLITE_ENABLE_FTS3 -DSQLITE_ENABLE_RTREE \
-  -DSQLITE_ENABLE_MEMORY_MANAGEMENT -DSQLITE_ENABLE_STAT3 \
-  -DSQLITE_ENABLE_MEMSYS5 -DSQLITE_ENABLE_UNLOCK_NOTIFY \
-  -DSQLITE_ENABLE_COLUMN_METADATA -DSQLITE_ENABLE_ATOMIC_WRITE \
-  sqlite3.c
-nm sqlite3.o | grep " U "