Removed unused function.

src/optimize.py

 from utils import find_basic_blocks
 
 
-def optimize_branch_jump_label(statements):
-    """Optimize jumps after branches."""
-    out_statements = []
-
-    for i in xrange(len(statements)):
-        if i + 3 > len(statements):
-            out_statements.append(statements[i])
-            continue
-
-        stype, name, args = statements[i]
-        stype2, name2, args2 = statements[i + 1]
-        stype3, name3, args3 = statements[i + 2]
-
-        if stype == 'command' and name == 'beq' and \
-           stype2 == 'command' and name2 in ['j', 'jal'] and \
-           stype3 == 'label' and name3 == args['args'][2]:
-            out_statements.append(('command', 'bne', \
-                {'args': [args['args'][0], args['args'][1], args2['args'][0]]}))
-            out_statements.append(statements[1 + 2])
-            i += 3
-        else:
-            out_statements.append(statements[i])
-
-    return out_statements
-
-
 def optimize_global(statements):
-    """Optimize one-line statements in entire code."""
+    """Optimize statement sequences in on a global level."""
     old_len = -1
 
     while old_len != len(statements):