Fixed some warnings related to Redundant conformance

Author: imrvshah

Graph/Graph/AdjacencyListGraph.swift

@@ -7,7 +7,7 @@
 
 import Foundation
 
-private class EdgeList<T> where T: Equatable, T: Hashable {
+private class EdgeList<T> where T: Hashable {
 
   var vertex: Vertex<T>
   var edges: [Edge<T>]?
@@ -22,7 +22,7 @@ private class EdgeList<T> where T: Equatable, T: Hashable {
 
 }
 
-open class AdjacencyListGraph<T>: AbstractGraph<T> where T: Equatable, T: Hashable {
+open class AdjacencyListGraph<T>: AbstractGraph<T> where T: Hashable {
 
   fileprivate var adjacencyList: [EdgeList<T>] = []
 

Graph/Graph/AdjacencyMatrixGraph.swift

@@ -7,7 +7,7 @@
 
 import Foundation
 
-open class AdjacencyMatrixGraph<T>: AbstractGraph<T> where T: Equatable, T: Hashable {
+open class AdjacencyMatrixGraph<T>: AbstractGraph<T> where T: Hashable {
 
   // If adjacencyMatrix[i][j] is not nil, then there is an edge from
   // vertex i to vertex j.

Graph/Graph/Edge.swift

@@ -7,7 +7,7 @@
 
 import Foundation
 
-public struct Edge<T>: Equatable where T: Equatable, T: Hashable {
+public struct Edge<T>: Equatable where T: Hashable {
 
   public let from: Vertex<T>
   public let to: Vertex<T>

Graph/Graph/Graph.swift

@@ -7,7 +7,7 @@
 
 import Foundation
 
-open class AbstractGraph<T>: CustomStringConvertible where T: Equatable, T: Hashable {
+open class AbstractGraph<T>: CustomStringConvertible where T: Hashable {
 
   public required init() {}
 

Graph/Graph/Vertex.swift

@@ -7,7 +7,7 @@
 
 import Foundation
 
-public struct Vertex<T>: Equatable where T: Equatable, T: Hashable {
+public struct Vertex<T>: Equatable where T: Hashable {
 
   public var data: T
   public let index: Int
@@ -30,7 +30,7 @@ extension Vertex: Hashable {
 
 }
 
-public func ==<T: Equatable>(lhs: Vertex<T>, rhs: Vertex<T>) -> Bool {
+public func ==<T>(lhs: Vertex<T>, rhs: Vertex<T>) -> Bool {
   guard lhs.index == rhs.index else {
     return false
   }