supersize: Tweak diff symbol matching for generated symbols

tools/binary_size/libsupersize/models.py

Index: tools/binary_size/libsupersize/models.py
diff --git a/tools/binary_size/libsupersize/models.py b/tools/binary_size/libsupersize/models.py
index d9529f1798abcdde81c85bc22372208fd4c9b4df..22c8c6110742cadf47cdfab9f97f31e1da5ea6c0 100644
--- a/tools/binary_size/libsupersize/models.py
+++ b/tools/binary_size/libsupersize/models.py
@@ -57,13 +57,6 @@ FLAG_REL = 8
 FLAG_REL_LOCAL = 16
 
 
-def _StripCloneSuffix(name):
-  clone_idx = name.find(' [clone ')
-  if clone_idx != -1:
-    return name[:clone_idx]
-  return name
-
-
 class SizeInfo(object):
   """Represents all size information for a single binary.
 
@@ -178,17 +171,6 @@ class BaseSymbol(object):
     #     startup._GLOBAL__sub_I_page_allocator.cc
     return self.name.endswith(']') and not self.name.endswith('[]')
 
-  def _Key(self):
-    """Returns a tuple that can be used to see if two Symbol are the same.
-
-    Keys are not guaranteed to be unique within a SymbolGroup. For example, it
-    is common to have multiple "** merge strings" symbols, which will have a
-    common key."""
-    stripped_full_name = self.full_name
-    if stripped_full_name:
-      stripped_full_name = _StripCloneSuffix(stripped_full_name)
-    return (self.section_name, stripped_full_name or self.name)
-
 
 class Symbol(BaseSymbol):
   """Represents a single symbol within a binary.