Remove (old?) operator/ member functions

These don't seem to have matching definitions and they conflict with
similar functions in the glm namespace (in the same header files).

glm/detail/type_mat2x2.hpp

@@ -49,11 +49,6 @@ namespace glm
 		typedef tmat2x2<T, P> transpose_type;
 		typedef T value_type;
 
-		template <typename U, precision Q>
-		friend tvec2<U, Q> operator/(tmat2x2<U, Q> const & m, tvec2<U, Q> const & v);
-		template <typename U, precision Q>
-		friend tvec2<U, Q> operator/(tvec2<U, Q> const & v, tmat2x2<U, Q> const & m);
-
 	private:
 		col_type value[2];
 

glm/detail/type_mat3x3.hpp

@@ -49,11 +49,6 @@ namespace glm
 		typedef tmat3x3<T, P> transpose_type;
 		typedef T value_type;
 
-		template <typename U, precision Q>
-		friend tvec3<U, Q> operator/(tmat3x3<U, Q> const & m, tvec3<U, Q> const & v);
-		template <typename U, precision Q>
-		friend tvec3<U, Q> operator/(tvec3<U, Q> const & v, tmat3x3<U, Q> const & m);
-
 	private:
 		col_type value[3];
 

glm/detail/type_mat4x4.hpp

@@ -49,11 +49,6 @@ namespace glm
 		typedef tmat4x4<T, P> transpose_type;
 		typedef T value_type;
 
-		template <typename U, precision Q>
-		friend tvec4<U, Q> operator/(tmat4x4<U, Q> const & m, tvec4<U, Q> const & v);
-		template <typename U, precision Q>
-		friend tvec4<U, Q> operator/(tvec4<U, Q> const & v, tmat4x4<U, Q> const & m);
-
 	private:
 		col_type value[4];