Reinsertion of Blas optimizations after Scan opts, should not have been pushed.

theano/scan_module/scan_opt.py

@@ -132,10 +132,6 @@ scan_seqopt.register('scanOp_remove_constants_and_unused_inputs',
                      5,
                      'fast_run',
                      'scan')
-# We need this as some scan optimization move some computation outside of scan.
-# So we need to reapply some optimization that was done before.
-proxydb = theano.gof.ProxyDB(theano.tensor.blas.blas_optdb)
-optdb.register('BlasOpt2', proxydb, 1.91, 'fast_run')
 
 # This is a global opt for historical reason
 # It should be possible to change it to a local opt.