Cleanup sqlite3 port. NFC (#17841)

Should have been part of #17822.

Author: sbc100

tools/ports/sqlite3.py

@@ -4,7 +4,6 @@
 # found in the LICENSE file.
 
 import os
-import shutil
 import logging
 
 # sqlite amalgamation download URL uses relase year and tag
@@ -34,11 +33,8 @@ def create(final):
     logging.info('building port: libsqlite3')
 
     source_path = os.path.join(ports.get_dir(), 'sqlite3', release)
-    dest_path = ports.clear_project_build('sqlite3')
-
-    shutil.copytree(source_path, dest_path)
 
-    ports.install_headers(dest_path)
+    ports.install_headers(source_path)
 
     # flags are based on sqlite-autoconf output.
     # SQLITE_HAVE_ZLIB is only used by shell.c
@@ -76,6 +72,7 @@ def create(final):
     else:
       flags += ['-DSQLITE_THREADSAFE=0']
 
+    dest_path = ports.clear_project_build('sqlite3')
     ports.build_port(source_path, final, dest_path, flags=flags, exclude_files=['shell.c'])
 
   return [shared.Cache.get_lib(get_lib_name(settings), create, what='port')]