Update the version of HoTT

Time     | File Name
------------------------------------------------
0m18.02s | Category/Equality
0m10.82s | UniversalProperties
0m09.94s | Comma/Duals
0m09.37s | Groupoid
0m08.66s | Comma/InducedFunctors
0m04.76s | SumPreCategory
0m04.67s | Functor/Equality
0m04.06s | Groupoid/Duals
0m03.69s | Groupoid/Functors
0m02.96s | Grothendieck/ToSet
0m02.60s | Comma/CommaCategory
0m02.41s | BoolCategory
0m02.30s | Category/Morphisms
0m02.22s | NaturalTransformation/Equality
0m01.98s | NaturalTransformation/Duals
0m01.78s | Category/Product
0m01.68s | Hom
0m01.51s | NaturalTransformation/Composition
0m01.25s | NaturalTransformation/CompositionLaws
0m01.17s | InitialTerminalCategory
0m01.11s | Functor/Product
0m01.03s | Comma/Projection
0m00.93s | NaturalTransformation/Product
0m00.51s | Common
0m00.51s | Functor/CompositionLaws
0m00.38s | Cat
0m00.34s | Discrete/Duals
0m00.32s | IndiscreteCategory
0m00.30s | NaturalTransformation/Identity
0m00.29s | FunctorCategory
0m00.26s | Adjoint/UnitCounit
0m00.26s | SetCategory
0m00.26s | NatCategory/Duals
0m00.25s | Functor/Composition
0m00.24s | Category/Objects
0m00.24s | Functor/Duals
0m00.24s | NatCategory
0m00.21s | IsGroupoid
0m00.17s | Category/Core
0m00.17s | NaturalTransformation/Core
0m00.14s | ComputableCat
0m00.14s | Peano
0m00.14s | NaturalNumbersObject
0m00.12s | Functor/Core
0m00.12s | Category/Duals
0m00.12s | Category/StrictCategory
0m00.11s | NaturalTransformation
0m00.11s | Functor/Identity
0m00.11s | Functor
0m00.10s | Utf8
0m00.10s | Category/Category
0m00.10s | DiscreteCategory
0m00.10s | Grothendieck
0m00.03s | NotationsUtf8
0m00.03s | Notations
------------------------------------------------
1m45.43s | Total
Remove cruft

Now that some pull requests have been merged into HoTT/coq, we can get
rid of a few things.

After    | File Name                             | Before
-----------------------------------------------------------
0m17.90s | Category/Equality                     | 0m17.51s
0m10.04s | Comma/Duals                           | 0m09.92s
0m08.85s | Groupoid                              | 0m09.47s
0m07.68s | Comma/InducedFunctors                 | 0m08.65s
0m04.72s | Functor/Equality                      | 0m04.46s
0m04.66s | SumPreCategory                        | 0m04.75s
0m03.88s | Groupoid/Functors                     | 0m03.41s
0m03.70s | Groupoid/Duals                        | 0m04.10s
0m03.08s | UniversalProperties                   | 0m10.88s
0m02.74s | Grothendieck/ToSet                    | 0m02.80s
0m02.47s | Comma/CommaCategory                   | 0m02.31s
0m02.36s | BoolCategory                          | 0m02.43s
0m02.13s | Category/Morphisms                    | 0m02.28s
0m02.00s | NaturalTransformation/Equality        | 0m02.36s
0m01.87s | NaturalTransformation/Duals           | 0m02.07s
0m01.83s | Category/Product                      | 0m01.82s
0m01.76s | Hom                                   | 0m01.70s
0m01.46s | NaturalTransformation/Composition     | 0m01.38s
0m01.13s | NaturalTransformation/CompositionLaws | 0m01.22s
0m01.02s | Functor/Product                       | 0m00.96s
0m00.95s | NaturalTransformation/Product         | 0m00.95s
0m00.57s | InitialTerminalCategory               | 0m01.06s
0m00.47s | Functor/CompositionLaws               | 0m00.47s
0m00.44s | Common                                | 0m00.52s
0m00.36s | Comma/Projection                      | 0m01.08s
0m00.34s | IndiscreteCategory                    | 0m00.29s
0m00.31s | SetCategory                           | 0m00.26s
0m00.30s | NaturalTransformation/Identity        | 0m00.30s
0m00.30s | Discrete/Duals                        | 0m00.34s
0m00.28s | FunctorCategory                       | 0m00.27s
0m00.27s | Adjoint/UnitCounit                    | 0m00.25s
0m00.25s | Cat                                   | 0m00.42s
0m00.24s | Functor/Duals                         | 0m00.21s
0m00.23s | Category/Objects                      | 0m00.24s
0m00.23s | NatCategory                           | 0m00.25s
0m00.23s | Functor/Composition                   | 0m00.22s
0m00.22s | IsGroupoid                            | 0m00.20s
0m00.16s | NatCategory/Duals                     | 0m00.23s
0m00.16s | NaturalTransformation/Core            | 0m00.19s
0m00.15s | Category/Core                         | 0m00.17s
0m00.14s | ComputableCat                         | 0m00.12s
0m00.14s | NaturalNumbersObject                  | 0m00.14s
0m00.14s | Peano                                 | 0m00.12s
0m00.13s | Category/Duals                        | 0m00.14s
0m00.12s | Category/Category                     | 0m00.09s
0m00.12s | Functor/Core                          | 0m00.12s
0m00.11s | Functor/Identity                      | 0m00.09s
0m00.11s | Functor                               | 0m00.12s
0m00.11s | Grothendieck                          | 0m00.13s
0m00.10s | NaturalTransformation                 | 0m00.10s
0m00.10s | DiscreteCategory                      | 0m00.10s
0m00.09s | Category/StrictCategory               | 0m00.10s
0m00.07s | Utf8                                  | 0m00.08s
0m00.04s | NotationsUtf8                         | 0m00.06s
0m00.04s | Notations                             | 0m00.05s
-----------------------------------------------------------
1m33.29s | Total                                 | 1m43.96s