1 files changed, 0 insertions, 111 deletions
diff --git a/pygments/lexers/verification.py b/pygments/lexers/verification.py
deleted file mode 100644
index f6530726..00000000
--- a/pygments/lexers/verification.py
+++ /dev/null
@@ -1,111 +0,0 @@
-# -*- coding: utf-8 -*-
-"""
-    pygments.lexers.verification
-    ~~~~~~~~~~~~~~~~~~~~~~~~~~~~
-
-    Lexer for Intermediate Verification Languages (IVLs).
-
-    :copyright: Copyright 2006-2019 by the Pygments team, see AUTHORS.
-    :license: BSD, see LICENSE for details.
-"""
-
-from pygments.lexer import RegexLexer, include, words
-from pygments.token import Comment, Operator, Keyword, Name, Number, \
-    Punctuation, Whitespace
-
-__all__ = ['BoogieLexer', 'SilverLexer']
-
-
-class BoogieLexer(RegexLexer):
-    """
-    For `Boogie <https://boogie.codeplex.com/>`_ source code.
-
-    .. versionadded:: 2.1
-    """
-    name = 'Boogie'
-    aliases = ['boogie']
-    filenames = ['*.bpl']
-
-    tokens = {
-        'root': [
-            # Whitespace and Comments
-            (r'\n', Whitespace),
-            (r'\s+', Whitespace),
-            (r'//[/!](.*?)\n', Comment.Doc),
-            (r'//(.*?)\n', Comment.Single),
-            (r'/\*', Comment.Multiline, 'comment'),
-
-            (words((
-                'axiom', 'break', 'call', 'ensures', 'else', 'exists', 'function',
-                'forall', 'if', 'invariant', 'modifies', 'procedure',  'requires',
-                'then', 'var', 'while'),
-             suffix=r'\b'), Keyword),
-            (words(('const',), suffix=r'\b'), Keyword.Reserved),
-
-            (words(('bool', 'int', 'ref'), suffix=r'\b'), Keyword.Type),
-            include('numbers'),
-            (r"(>=|<=|:=|!=|==>|&&|\|\||[+/\-=>*<\[\]])", Operator),
-            (r"([{}():;,.])", Punctuation),
-            # Identifier
-            (r'[a-zA-Z_]\w*', Name),
-        ],
-        'comment': [
-            (r'[^*/]+', Comment.Multiline),
-            (r'/\*', Comment.Multiline, '#push'),
-            (r'\*/', Comment.Multiline, '#pop'),
-            (r'[*/]', Comment.Multiline),
-        ],
-        'numbers': [
-            (r'[0-9]+', Number.Integer),
-        ],
-    }
-
-
-class SilverLexer(RegexLexer):
-    """
-    For `Silver <https://bitbucket.org/viperproject/silver>`_ source code.
-
-    .. versionadded:: 2.2
-    """
-    name = 'Silver'
-    aliases = ['silver']
-    filenames = ['*.sil', '*.vpr']
-
-    tokens = {
-        'root': [
-            # Whitespace and Comments
-            (r'\n', Whitespace),
-            (r'\s+', Whitespace),
-            (r'//[/!](.*?)\n', Comment.Doc),
-            (r'//(.*?)\n', Comment.Single),
-            (r'/\*', Comment.Multiline, 'comment'),
-
-            (words((
-                'result', 'true', 'false', 'null', 'method', 'function',
-                'predicate', 'program', 'domain', 'axiom', 'var', 'returns',
-                'field', 'define', 'requires', 'ensures', 'invariant',
-                'fold', 'unfold', 'inhale', 'exhale', 'new', 'assert',
-                'assume', 'goto', 'while', 'if', 'elseif', 'else', 'fresh',
-                'constraining', 'Seq', 'Set', 'Multiset', 'union', 'intersection',
-                'setminus', 'subset', 'unfolding', 'in', 'old', 'forall', 'exists',
-                'acc', 'wildcard', 'write', 'none', 'epsilon', 'perm', 'unique',
-                'apply', 'package', 'folding', 'label', 'forperm'),
-             suffix=r'\b'), Keyword),
-            (words(('Int', 'Perm', 'Bool', 'Ref'), suffix=r'\b'), Keyword.Type),
-            include('numbers'),
-
-            (r'[!%&*+=|?:<>/\-\[\]]', Operator),
-            (r'([{}():;,.])', Punctuation),
-            # Identifier
-            (r'[\w$]\w*', Name),
-        ],
-        'comment': [
-            (r'[^*/]+', Comment.Multiline),
-            (r'/\*', Comment.Multiline, '#push'),
-            (r'\*/', Comment.Multiline, '#pop'),
-            (r'[*/]', Comment.Multiline),
-        ],
-        'numbers': [
-            (r'[0-9]+', Number.Integer),
-        ],
-    }