Revert "Add test for client disconnect cleanup behavior"

This reverts commit e9dd3ee.

Author: ihabadham

react_on_rails_pro/spec/react_on_rails_pro/stream_spec.rb

@@ -485,61 +485,5 @@ def setup_stream_test(component_count: 2)
       gaps = write_timestamps.each_cons(2).map { |a, b| b - a }
       expect(gaps.all? { |gap| gap >= 0.04 }).to be true
     end
-
-    it "properly cleans up when client disconnects" do
-      queues, controller, stream = setup_stream_test(component_count: 2)
-
-      chunks_written = []
-      cleanup_checks = {
-        stream_close_called: false,
-        queue_closed: false,
-        writer_stopped: false
-      }
-
-      # Simulate client disconnect after 3 chunks
-      allow(stream).to receive(:write) do |chunk|
-        chunks_written << chunk
-        if chunks_written.length == 3
-          # Simulate client disconnect
-          raise IOError, "client disconnected"
-        end
-      end
-
-      allow(stream).to receive(:close) do
-        cleanup_checks[:stream_close_called] = true
-      end
-
-      # This should raise IOError but still clean up properly
-      expect do
-        run_stream(controller) do |_parent|
-          # Enqueue chunks from both components
-          queues[0].enqueue("A1")
-          queues[0].enqueue("A2")
-          queues[0].enqueue("A3")
-          queues[1].enqueue("B1")
-          queues[1].enqueue("B2")
-          queues[1].enqueue("B3")
-
-          sleep 0.1
-
-          # Close queues
-          queues[0].close
-          queues[1].close
-
-          sleep 0.2
-        end
-      end.to raise_error(IOError, /client disconnected/)
-
-      # Verify cleanup happened
-      expect(cleanup_checks[:stream_close_called]).to be true
-
-      # Verify exactly 3 chunks were written before disconnect
-      expect(chunks_written.length).to eq(3)
-
-      # The test verifies that:
-      # 1. The IOError was raised (error propagation works)
-      # 2. Stream close was still called (ensure block executed)
-      # 3. No more chunks were written after disconnect
-    end
   end
 end