Revert "test: add non monitoring test"

This reverts commit 7f977d0.

Author: durran

test/unit/cmap/connection.test.ts

@@ -159,67 +159,6 @@ describe('new Connection()', function () {
   });
 
   describe('#onMessage', function () {
-    context('when the connection is not a monitoring connection', function () {
-      let queue: Map<number, OperationDescription>;
-      let driverSocket: FakeSocket;
-      let connection: Connection;
-
-      beforeEach(function () {
-        driverSocket = sinon.spy(new FakeSocket());
-      });
-
-      context('when more than one operation description is in the queue', function () {
-        let spyOne;
-        let spyTwo;
-        const document = { ok: 1 };
-
-        beforeEach(function () {
-          spyOne = sinon.spy();
-          spyTwo = sinon.spy();
-
-          // @ts-expect-error: driverSocket does not fully satisfy the stream type, but that's okay
-          connection = new Connection(driverSocket, connectionOptionsDefaults);
-          const queueSymbol = getSymbolFrom(connection, 'queue');
-          queue = connection[queueSymbol];
-
-          // Create the operation descriptions.
-          const descriptionOne: OperationDescription = {
-            requestId: 1,
-            cb: spyOne
-          };
-          const descriptionTwo: OperationDescription = {
-            requestId: 2,
-            cb: spyTwo
-          };
-
-          // Stick an operation description in the queue.
-          queue.set(2, descriptionOne);
-          queue.set(3, descriptionTwo);
-          // Emit a message that matches the existing operation description.
-          const msg = generateOpMsgBuffer(document);
-          const msgHeader: MessageHeader = {
-            length: msg.readInt32LE(0),
-            requestId: 2,
-            responseTo: 1,
-            opCode: msg.readInt32LE(12)
-          };
-          const msgBody = msg.subarray(16);
-
-          const message = new BinMsg(msg, msgHeader, msgBody);
-          connection.onMessage(message);
-        });
-
-        it('calls all operation description callbacks with an error', function () {
-          expect(spyOne).to.be.calledOnce;
-          expect(spyTwo).to.be.calledOnce;
-          const errorOne = spyOne.firstCall.args[0];
-          const errorTwo = spyTwo.firstCall.args[0];
-          expect(errorOne).to.be.instanceof(MongoRuntimeError);
-          expect(errorTwo).to.be.instanceof(MongoRuntimeError);
-        });
-      });
-    });
-
     context('when the connection is a monitoring connection', function () {
       let queue: Map<number, OperationDescription>;
       let driverSocket: FakeSocket;