Don't run test_flake8 as part of the FAST_COMPILE tests.

.travis.yml

@@ -47,9 +47,9 @@ matrix:
   fast_finish: true
   include:
     - python: "3.3"
-      env: PART="." THEANO_FLAGS="mode=FAST_COMPILE"
+      env: PART="-e test_flake8.py ." THEANO_FLAGS="mode=FAST_COMPILE"
     - python: "2.6"
-      env: PART="." THEANO_FLAGS="mode=FAST_COMPILE,floatX=float32"
+      env: PART="-e test_flake8.py ." THEANO_FLAGS="mode=FAST_COMPILE,floatX=float32"
 
 script:
   - export THEANO_FLAGS=$THEANO_FLAGS,warn.ignore_bug_before=all,on_opt_error=raise,on_shape_error=raise,gcc.cxxflags=-pipe