Remove the remark file that is not needed anymore.

doc/tutorial/index.txt

@@ -40,7 +40,6 @@ you out.
     gpu_data_convert
     aliasing
     shape_info
-    remarks
     debug_faq
     extending_theano
     faq

doc/tutorial/remarks.txt

-
-.. _tutorial_general_remarks:
-
-=====================
-Some general Remarks
-=====================
-
-.. This section is reserved for remarks and discussions of a general scope regarding the
-.. nature and development of Theano.
-.. The FAQ section is dedicated to specifics, i.e. information regarding the what, how,
-.. why and if of Theano. 
-