fix: remove invalid dunder methods

Accidentally included python2 dunder methods that are no longer part of python3.
For example, __irpow__ no longer exists, and instead only __ipow__ is used.

Author: ScottBoyce

NumpyDeque/NumpyDeque.py

@@ -784,48 +784,24 @@ def __itruediv__(self, other):  # To get called on true division with assignment
         self.deque /= other
         return self
 
-    def __irtruediv__(self, other):  # To get called on true division with assignment e.g. a /=b.
-        if isinstance(other, NumpyDeque):
-            other = other.deque
-        self.deque /= other
-        return self
-
     def __ifloordiv__(self, other):  # To get called on integer division with assignment e.g. a //=b.
         if isinstance(other, NumpyDeque):
             other = other.deque
         self.deque //= other
         return self
 
-    def __irfloordiv__(self, other):  # To get called on integer division with assignment e.g. a //=b.
-        if isinstance(other, NumpyDeque):
-            other = other.deque
-        self.deque //= other
-        return self
-
     def __imod__(self, other):  # To get called on modulo with assignment e.g. a%=b.
         if isinstance(other, NumpyDeque):
             other = other.deque
         self.deque %= other
         return self
 
-    def __irmod__(self, other):  # To get called on modulo with assignment e.g. a%=b.
-        if isinstance(other, NumpyDeque):
-            other = other.deque
-        self.deque %= other
-        return self
-
     def __ipow__(self, other):  # To get called on exponents with assignment e.g. a **=b.
         if isinstance(other, NumpyDeque):
             other = other.deque
         self.deque **= other
         return self
 
-    def __irpow__(self, other):  # To get called on exponents with assignment e.g. a **=b.
-        if isinstance(other, NumpyDeque):
-            other = other.deque
-        self.deque **= other
-        return self
-
     def __int__(self):  # To get called by built-int int() method to convert a type to an int.
         return NumpyDeque.array(self.deque, self.maxsize, np.int32, None, self.priority, _force_buffer_size=self._bcap)