Remove unneeded backslashes

scripts/extract_failed_ids.sh

@@ -15,7 +15,7 @@ else
 fi
 
 {
-    grep 'Could not download submission' "$file" | awk '{ print $12 }' | rev | cut -c 2- | rev ; \
+    grep 'Could not download submission' "$file" | awk '{ print $12 }' | rev | cut -c 2- | rev ;
-    grep 'Failed to download resource' "$file" | awk '{ print $15 }' ; \
+    grep 'Failed to download resource' "$file" | awk '{ print $15 }' ;
-    grep 'failed to download submission' "$file" | awk '{ print $14 }' | rev | cut -c 2- | rev ; \
+    grep 'failed to download submission' "$file" | awk '{ print $14 }' | rev | cut -c 2- | rev ;
 } >>"$output"