Remove redundant WebSocket test case (v5 compatible)

Author: raju-mechatronics

context_test.go

@@ -1002,17 +1002,6 @@ func TestContext_IsWebSocket(t *testing.T) {
 			},
 			assert.False,
 		},
-		{
-			&context{
-				request: &http.Request{
-					Header: http.Header{
-						HeaderUpgrade:    []string{"websocket"},
-						HeaderConnection: []string{"close"},
-					},
-				},
-			},
-			assert.False,
-		},
 	}
 
 	for i, tt := range tests {