Remove obsolete __future__ imports (#8337)

scripts-dev/definitions.py

@@ -1,7 +1,5 @@
 #! /usr/bin/python
 
-from __future__ import print_function
-
 import argparse
 import ast
 import os

scripts-dev/dump_macaroon.py

@@ -1,7 +1,5 @@
 #!/usr/bin/env python2
 
-from __future__ import print_function
-
 import sys
 
 import pymacaroons

scripts-dev/federation_client.py

@@ -15,8 +15,6 @@
 # See the License for the specific language governing permissions and
 # limitations under the License.
 
-from __future__ import print_function
-
 import argparse
 import base64
 import json

scripts-dev/hash_history.py

@@ -1,5 +1,3 @@
-from __future__ import print_function
-
 import sqlite3
 import sys