Update remove_teensyloader.py

The build hook pattern changed with Teensyduino 1.55, which breaks the CI.

Author: dmadison

.github/workflows/remove_teensyloader.py

@@ -1,16 +1,24 @@
 #!/usr/bin/python
 
 import sys
+import re
 
-filepath = sys.argv[1]
-lines = []
+filepath = sys.argv[1]  # path of the file to parse
+lines = []  # list of lines from the file
+removed = False  # flag for if the line was removed from the file
 
 with open(filepath, 'r') as f:
 	lines = f.readlines()
 
 with open(filepath, 'w') as f:
+	# matching "postbuild" hooks of any number which call the "teensy_post_compile" application
+	pattern = re.compile("recipe\.hooks\.postbuild\.[0-9]\.pattern=\"{compiler\.path}teensy_post_compile\"")
 	for line in lines:
-		if not line.startswith("recipe.hooks.postbuild.3.pattern=\"{compiler.path}teensy_post_compile\""):  # remove post-compile trigger
+		if not pattern.match(line):
 			f.write(line)
 		else:
 			print("Removing line '{}'".format(line.strip('\n')))
+			removed = True
+
+if not removed:
+	raise RuntimeError("Did not find a matching line to remove in \"{}\"".format(filepath))