remove traces of buildout

doc/guide.rst

@@ -506,7 +506,7 @@ on an evaluation set, after setting up |project|, just do:
 
 .. code-block:: sh
 
-    ./bin/bob measure  metrics ./MTest1/scores-{dev,eval} -e -v
+    bob measure  metrics ./MTest1/scores-{dev,eval} -e -v
     [Min. criterion: EER ] Threshold on Development set `./MTest1/scores-dev`: -1.373550e-02
     bob.measure@2018-06-29 10:20:14,177 -- WARNING: NaNs scores (1.0%) were found in ./MTest1/scores-dev
     bob.measure@2018-06-29 10:20:14,177 -- WARNING: NaNs scores (1.0%) were found in ./MTest1/scores-eval
@@ -536,7 +536,7 @@ To evaluate the performance of a new score file with a given threshold, use
 
 .. code-block:: sh
 
-    ./bin/bob measure  metrics ./MTest1/scores-eval -v --thres 0.006
+    bob measure  metrics ./MTest1/scores-eval -v --thres 0.006
     [Min. criterion: user provided] Threshold on Development set `./MTest1/scores-eval`: 6.000000e-03
     bob.measure@2018-06-29 10:22:06,852 -- WARNING: NaNs scores (1.0%) were found in ./MTest1/scores-eval
     ===================  ================