Update check_requirements() single install (#9353)

* Update `check_requirements()` single install

Faster install and better conflict resolution with single installation

Signed-off-by: Glenn Jocher <glenn.jocher@ultralytics.com>

* Update

* Update

* Update

Signed-off-by: Glenn Jocher <glenn.jocher@ultralytics.com>

models/common.py

@@ -347,7 +347,7 @@ class DetectMultiBackend(nn.Module):
                 stride, names = int(d['stride']), d['names']
         elif dnn:  # ONNX OpenCV DNN
             LOGGER.info(f'Loading {w} for ONNX OpenCV DNN inference...')
-            check_requirements(('opencv-python>=4.5.4',))
+            check_requirements('opencv-python>=4.5.4')
             net = cv2.dnn.readNetFromONNX(w)
         elif onnx:  # ONNX Runtime
             LOGGER.info(f'Loading {w} for ONNX Runtime inference...')
@@ -362,7 +362,7 @@ class DetectMultiBackend(nn.Module):
                 stride, names = int(meta['stride']), eval(meta['names'])
         elif xml:  # OpenVINO
             LOGGER.info(f'Loading {w} for OpenVINO inference...')
-            check_requirements(('openvino',))  # requires openvino-dev: https://pypi.org/project/openvino-dev/
+            check_requirements('openvino')  # requires openvino-dev: https://pypi.org/project/openvino-dev/
             from openvino.runtime import Core, Layout, get_batch
             ie = Core()
             if not Path(w).is_file():  # if not *.xml