🧹 README: Do not mention obsolete + unsupported checkpoint parameter

Fixes OCR-D#79.

Author: mikegerber

README.md

@@ -65,12 +65,6 @@ ocrd-tesserocr-segment-line -I OCR-D-SEG-REGION -O OCR-D-SEG-LINE
 ```
 
 Finally recognize the text using ocrd_calamari and the downloaded model:
-```
-ocrd-calamari-recognize -P checkpoint "../gt4histocr-calamari1/*.ckpt.json" -I OCR-D-SEG-LINE -O OCR-D-OCR-CALAMARI
-```
-
-or
-
 ```
 ocrd-calamari-recognize -P checkpoint_dir "../gt4histocr-calamari1" -I OCR-D-SEG-LINE -O OCR-D-OCR-CALAMARI
 ```