Remove patch file

patches/OpenSfM.diff

@@ -1,47 +0,0 @@
-diff --git a/opensfm/context.py b/opensfm/context.py
-index a01dd700..f54fcf87 100644
---- a/opensfm/context.py
-+++ b/opensfm/context.py
-@@ -17,6 +17,9 @@ BOW_PATH = os.path.join(abspath, 'data', 'bow')
- 
- 
- # Handle different OpenCV versions
-+OPENCV5 = int(cv2.__version__.split('.')[0]) >= 5 #future proofing SIFT support test (see features.py)
-+OPENCV4 = int(cv2.__version__.split('.')[0]) >= 4
-+OPENCV44 = int(cv2.__version__.split('.')[0]) == 4 and int(cv2.__version__.split('.')[1]) >= 4 # for SIFT support (see features.py)
- OPENCV3 = int(cv2.__version__.split('.')[0]) >= 3
- 
- if hasattr(cv2, 'flann_Index'):
-diff --git a/opensfm/features.py b/opensfm/features.py
-index 3e80224b..78e51ce5 100644
---- a/opensfm/features.py
-+++ b/opensfm/features.py
-@@ -87,7 +87,13 @@ def _in_mask(point, width, height, mask):
- def extract_features_sift(image, config):
-     sift_edge_threshold = config['sift_edge_threshold']
-     sift_peak_threshold = float(config['sift_peak_threshold'])
--    if context.OPENCV3:
-+    # SIFT support is in cv2 main from version 4.4.0
-+    if context.OPENCV44 or context.OPENCV5:
-+        detector = cv2.SIFT_create(
-+            edgeThreshold=sift_edge_threshold,
-+            contrastThreshold=sift_peak_threshold)
-+        descriptor = detector
-+    elif context.OPENCV3:
-         try:
-             detector = cv2.xfeatures2d.SIFT_create(
-                 edgeThreshold=sift_edge_threshold,
-@@ -105,7 +110,12 @@ def extract_features_sift(image, config):
-     while True:
-         logger.debug('Computing sift with threshold {0}'.format(sift_peak_threshold))
-         t = time.time()
--        if context.OPENCV3:
-+        # SIFT support is in cv2 main from version 4.4.0
-+        if context.OPENCV44 or context.OPENCV5:
-+            detector = cv2.SIFT_create(
-+                edgeThreshold=sift_edge_threshold,
-+                contrastThreshold=sift_peak_threshold)
-+        elif context.OPENCV3:
-             detector = cv2.xfeatures2d.SIFT_create(
-                 edgeThreshold=sift_edge_threshold,
-                 contrastThreshold=sift_peak_threshold)