Removed old commented operators.

src/node.py

@@ -85,12 +85,6 @@ TOKEN_MAP = {
         OP_TAN: 'FUNCTION',
         OP_INT: 'FUNCTION',
         OP_SOLVE: 'FUNCTION',
-        #OP_SQRT: 'SQRT',
-        #OP_SIN: 'SIN',
-        #OP_COS: 'COS',
-        #OP_TAN: 'TAN',
-        #OP_INT: 'INT',
-        #OP_SOLVE: 'SOLVE',
         OP_EQ: 'EQ',
         OP_POSSIBILITIES: 'POSSIBILITIES',
         OP_HINT: 'HINT',