Remove blender2.7 build

The last version is now archived on download.blender.org/release.

master_unpack.py

@@ -67,9 +67,6 @@ def get_platform(filename):
 
 
 def get_branch(filename):
-    if filename.startswith("blender-2.7"):
-        return "blender2.7"
-
     tokens = filename.split("-")
     branch = ""