Refact: Remove useless files

TODO

@@ -1,11 +0,0 @@
-# Todolist
-
-* Improve fix recognition (DONE)
-* More flexible expression parsing (DONE)
-* bug: expression can't handle -(-2) (DONE)
-* Overload + - * for expression (DONE ~ no steps yet)
-* Add name to polynom (DONE)
-
-* Expression parents class and his children: Numerical_exp, toGenerate_exp and formal expression
-* Create tbl sgn and variation render
-* Make less verbose fractions operations(DONE)

bugs

@@ -1,93 +0,0 @@
-* Soustraction de Polynômes!!!!
-
-* (solved) Expression importe mal 4x^2
-    In [9]: e = Expression("3x + 4x^2 - 1")
-
-    In [10]: print(e)
-    3 x + ( 4 x ) ^ 2 - 1
-
-    -> faire un test unitaire dessus
-    
-*(solved) Render ne met pas les parenthèses là où il faut.
-
-    In [31]: r
-    Out[31]: < Polynom [-4, -15, -14]>
-
-    In [35]: print(r)
-    -14 * x ^ 2 + -15 x + ( -4 )
-
-    In [36]: r.get_postfix()
-    Out[36]: [-14, 'x', 2, '^', '*', -15, 'x', '*', '+', -4, '+']
-
-    In [37]: txt(r.get_postfix())
-    Out[37]: '-14 * x ^ 2 + -15 x + ( -4 )'
-        
-
-    -> faire un test unitaire dessus
-
-*(solved) Fraction ne simplifie pas correctement 
-
-    In [5]: for i in P.alpha.simplify():
-        print(i)
-    ...:     
-    \frac{ - 2 }{ 2 \times 3 }
-    \frac{ -2 }{ 6 }
-    \frac{ ( -1 ) \times 2 }{ 3 \times 2 }
-    \frac{ -1 }{ 3 }
-    \frac{ -2 }{ 6 }
-
-* Opération entre une expression et une fraction ou un Polynom
-
-    In [3]: P = Polynom([1,2,1])
-
-    In [4]: e = Expression("1+2*3")
-
-    In [5]: e + P
-    Out[5]: < <class 'mapytex.expression.Expression'> [1, 2, 3, '*', '+', < Polynom [1, 2, 1]>, '+'] >
-
-    In [6]: P + e
-    ---------------------------------------------------------------------------
-    TypeError                                 Traceback (most recent call last)
-    <ipython-input-6-ff312ef36cdb> in <module>()
-    ----> 1 P + e
-
-    /home/lafrite/scripts/Mapytex/mapytex/polynom.py in __add__(self, other)
-        430         [< <class 'mapytex.expression.Expression'> [3, 'x', 2, '^', '*', 2, 'x', '*', '+', 1, '+', 5, 'x', '*', 4, '+', '+'] >, < Polynom [< <class 'mapytex.expression.Expression'> [1, 4, '+'] >, < <class 'mapytex.expression.Expression'> [2, 5, '+'] >, 3]>, < Polynom [< <class 'mapytex.expression.Expression'> [1, 4, '+'] >, < <class 'mapytex.expression.Expression'> [2, 5, '+'] >, 3]>]
-        431         """
-    --> 432         o_poly = self.conv2poly(other)
-        433 
-        434         n_coef = spe_zip(self._coef, o_poly._coef)
-
-    /home/lafrite/scripts/Mapytex/mapytex/polynom.py in conv2poly(self, other)
-        319             return other
-        320         else:
-    --> 321             raise ValueError(type(other) + " can't be converted into a polynom")
-        322 
-        323     def reduce(self):
-
-    TypeError: unsupported operand type(s) for +: 'type' and 'str'
-
-* (solved) Parenthèses abhérentes
-
-    In [7]: P = Polynom([-6, 12, -20])
-
-    In [8]: print(P)
-    ( - 20 x^{  2 } + 12 x ) - 6
-    
-
-* Chainer des opérations et sauvegarde des étapes
-
-    In [12]: R = P-Q - P
-
-    In [13]: R
-    Out[13]: < Polynom [-4, -5, 0]>
-
-    In [14]: for i in R.explain():
-        print(i)
-    ....:     
-    3 x^{  2 } - 3 x - 3 - ( 3 x^{  2 } + 2 x + 1 )
-    3 x^{  2 } - 3 x - 3 -  3 x^{  2 } - 2 x - 1
-    ( 3 - 3 ) x^{  2 } + ( -3 - 2 ) x - 3 - 1
-    - 5 x - 4
-    
-