revert changes made to migrations

src/documents/migrations/0012_auto_20160305_0040.py

@@ -94,8 +94,6 @@ def move_documents_and_create_thumbnails(apps, schema_editor):
                 "500x5000",
                 "-alpha",
                 "remove",
-                "-define",
-                "pdf:use-cropbox=true",
                 orig_target,
                 os.path.join(thumb_temp, "convert-%04d.png"),
             ),

src/documents/migrations/1021_webp_thumbnail_conversion.py

@@ -27,7 +27,6 @@ def _do_convert(work_package):
             strip=True,
             trim=False,
             auto_orient=True,
-            define="pdf:use-cropbox=true",
             input_file=f"{existing_thumbnail}[0]",
             output_file=str(converted_thumbnail),
         )

src/documents/migrations/1037_webp_encrypted_thumbnail_conversion.py

@@ -53,7 +53,6 @@ def _do_convert(work_package):
             strip=True,
             trim=False,
             auto_orient=True,
-            define="pdf:use-cropbox=true",
             input_file=f"{decrypted_thumbnail}[0]",
             output_file=str(converted_decrypted_thumbnail),
         )