Remove dead code from LLVM upgrade.

Signed-off-by: Vassil Vassilev <vvasilev@cern.ch>

test/lit.cfg

@@ -294,55 +294,6 @@ os.environ['CLING_NOHISTORY'] = '1'
 # FIXME: Find nicer way to prohibit this.
 config.substitutions.append(
     (' cling ', """*** Do not use 'cling' in tests, use '%cling'. ***""") )
-# Provide on_clone hook for reading 'dg.exp'.
-import os
-simpleLibData = re.compile(r"""load_lib llvm.exp
-
-RunLLVMTests \[lsort \[glob -nocomplain \$srcdir/\$subdir/\*\.(.*)\]\]""",
-                           re.MULTILINE)
-conditionalLibData = re.compile(r"""load_lib llvm.exp
-
-if.*\[ ?(llvm[^ ]*) ([^ ]*) ?\].*{
- *RunLLVMTests \[lsort \[glob -nocomplain \$srcdir/\$subdir/\*\.(.*)\]\]
-\}""", re.MULTILINE)
-def on_clone(parent, cfg, for_path):
-    def addSuffixes(match):
-        if match[0] == '{' and match[-1] == '}':
-            cfg.suffixes = ['.' + s for s in match[1:-1].split(',')]
-        else:
-            cfg.suffixes = ['.' + match]
-
-    libPath = os.path.join(os.path.dirname(for_path),
-                           'dg.exp')
-    if not os.path.exists(libPath):
-        cfg.unsupported = True
-        return
-
-    # Reset unsupported, in case we inherited it.
-    cfg.unsupported = False
-    lib = open(libPath).read().strip()
-
-    # Check for a simple library.
-    m = simpleLibData.match(lib)
-    if m:
-        addSuffixes(m.group(1))
-        return
-
-    # Check for a conditional test set.
-    m = conditionalLibData.match(lib)
-    if m:
-        funcname,arg,match = m.groups()
-        addSuffixes(match)
-
-        func = globals().get(funcname)
-        if not func:
-            lit_config.error('unsupported predicate %r' % funcname)
-        elif not func(arg):
-            cfg.unsupported = True
-        return
-    # Otherwise, give up.
-    lit_config.error('unable to understand %r:\n%s' % (libPath, lib))
-
 
 ### Features