Drop --max-report-size-child and --max-diff-block-lines-parent; scheduled for...

Drop --max-report-size-child and --max-diff-block-lines-parent; scheduled for removal in January 2018.

diffoscope/main.py

@@ -257,14 +257,6 @@ def create_parser():
         'effect even with --no-default-limits)',
         default=str(Config().max_page_size_child),
     ).completer = RangeCompleter(Config().max_page_size_child)
-    # TODO: old flag kept for backwards-compat, drop 6 months after v84
-    group2.add_argument(
-        '--max-report-size-child',
-        metavar='BYTES',
-        type=int,
-        help=argparse.SUPPRESS,
-        default=None,
-    )
     group2.add_argument(
         '--max-page-diff-block-lines',
         metavar='LINES',
@@ -277,14 +269,6 @@ def create_parser():
         'effect even with --no-default-limits)',
         default=Config().max_page_diff_block_lines,
     ).completer = RangeCompleter(Config().max_page_diff_block_lines)
-    # TODO: old flag kept for backwards-compat, drop 6 months after v84
-    group2.add_argument(
-        "--max-diff-block-lines-parent",
-        metavar='LINES',
-        type=int,
-        help=argparse.SUPPRESS,
-        default=None,
-    )
 
     group3 = parser.add_argument_group('diff calculation')
     group3.add_argument(
@@ -611,26 +595,7 @@ def configure(parsed_args):
             setattr(Config(), x, float("inf"))
 
     Config().max_page_size = parsed_args.max_page_size
-    # TODO: old flag kept for backwards-compat, drop 6 months after v84
-    if parsed_args.max_report_size_child is not None:
-        logger.warning(
-            "Detected deprecated flag --max-report-size-child; use --max-page-size-child instead."
-        )
-        Config().max_page_size_child = parsed_args.max_report_size_child
-
     Config().max_page_size_child = parsed_args.max_page_size_child
-    # TODO: old flag kept for backwards-compat, drop 6 months after v84
-    if parsed_args.max_diff_block_lines_parent is not None:
-        logger.warning(
-            "Detected deprecated flag --max-diff-block-lines-parent; use --max-page-diff-block-lines instead."
-        )
-        logger.warning(
-            "Note that the new flag --max-page-diff-block-lines also applies to --html output."
-        )
-        Config().max_page_diff_block_lines = (
-            parsed_args.max_diff_block_lines_parent
-        )
-
     Config().max_page_diff_block_lines = parsed_args.max_page_diff_block_lines
 
     Config().new_file = parsed_args.new_file