IMPALA-15027: Python 2 infra cleanup

Removes the unused distro Python package.

Removes six and future, which are compatibility packages for Python 2+3
that we don't need any more since impala-python is 3.11. Removes all use
of builtins, which came from future, and __future__ as well.

Replaces deprecated abstractproperty.

Removes special-casing to handle Python 2.

Testing: passed an exhaustive test run.

Change-Id: I1b43878bafa488d513b4440aab3865cb17b12c78
Reviewed-on: http://gerrit.cloudera.org:8080/24334
Reviewed-by: Impala Public Jenkins <impala-public-jenkins@cloudera.com>
Tested-by: Impala Public Jenkins <impala-public-jenkins@cloudera.com>

Author: MikaelSmith

.isort.cfg

@@ -19,7 +19,6 @@
 force_alphabetical_sort_within_sections=true
 force_sort_within_sections=true
 include_trailing_comma=true
-known_third_party=builtins
 known_first_party=impala_py_lib,impala_shell,impala_thrift_gen,tests
 line_length=90
 multi_line_output=3

be/src/codegen/gen_ir_descriptions.py

@@ -19,8 +19,6 @@
 # specific language governing permissions and limitations
 # under the License.
 
-from __future__ import absolute_import, division, print_function
-from string import Template
 import os
 import shutil
 import filecmp

bin/bootstrap_toolchain.py

@@ -54,7 +54,6 @@
 # The script is directly executable, and it takes no parameters:
 #     ./bootstrap_toolchain.py
 
-from __future__ import absolute_import, division, print_function
 import logging
 import multiprocessing.pool
 import os

bin/check-rat-report.py

@@ -33,7 +33,6 @@
 # time, and the RAT JAR is not included in the Impala repo; it must be downloaded
 # separately.
 
-from __future__ import absolute_import, division, print_function
 import fnmatch
 import re
 import sys

bin/collect_minidumps.py

@@ -24,7 +24,6 @@
 #       --role_name=statestored --max_output_size=50000000 --end_time=1463033495000 \
 #       --output_file_path=/tmp/minidump_package.tar.gz
 
-from __future__ import absolute_import, division, print_function
 import os
 import re
 import sys

bin/compare_branches.py

@@ -12,9 +12,6 @@
 # See the License for the specific language governing permissions and
 # limitations under the License.
 
-# Future imports must happen at the beginning of the file
-from __future__ import absolute_import, division, print_function
-
 HELP = '''
 Compares two specified branches, using the Gerrit Change-Id as the
 primary identifier. Ignored commits can be added via a JSON

bin/diagnostics/collect_diagnostics.py

@@ -17,7 +17,6 @@
 # specific language governing permissions and limitations
 # under the License.
 
-from __future__ import absolute_import, division, print_function
 import argparse
 import datetime
 import errno

bin/diagnostics/experimental/tpcds_run_comparator.py

@@ -17,7 +17,6 @@
 # specific language governing permissions and limitations
 # under the License
 
-from __future__ import print_function
 import argparse
 import csv
 import math
@@ -53,7 +52,7 @@ class Task(Enum):
     ['id', 'name', 'num_host', 'num_inst', 'avg_time', 'max_time', 'num_rows',
       'est_rows', 'peak_mem', 'est_peak_mem', 'detail'])
 
-RE_PEAK_MEM = re.compile("\d+\.\d\d [GMK]?B")
+RE_PEAK_MEM = re.compile(r"\d+\.\d\d [GMK]?B")
 
 # Defines list of sections in a profile file.
 # Format: (Task Enum, Section Delimeter)

bin/dump_breakpad_symbols.py

@@ -53,7 +53,6 @@
 #   $IMPALA_TOOLCHAIN_PACKAGES_HOME/breakpad-*/bin/minidump_stackwalk \
 #   /tmp/impala-minidumps/impalad/03c0ee26-bfd1-cf3e-43fa49ca-1a6aae25.dmp /tmp/syms
 
-from __future__ import absolute_import, division, print_function
 import errno
 import logging
 import magic

bin/gen-backend-test-script.py

@@ -20,7 +20,6 @@
 # used by the build system (see be/CMakeLists.txt for usage) and is not intended to be
 # run directly.
 
-from __future__ import absolute_import, division, print_function
 import argparse
 import os
 import stat