Fix debugger warnings about unused identifiers

If the identifier was used by code that was commented out, then I just
commented out the line that declared the identifier. If the identifier
wasn’t even used by code that was commented out, then I just deleted the
line that declared the identifier.

scenes/better_shell.gd

@@ -41,7 +41,6 @@ func run_async_thread(shell_command):
 	var debug = false
 	
 	var command = shell_command.command
-	var crash_on_fail = shell_command.crash_on_fail
 	
 	if debug:
 		print("$ %s" % command)
@@ -59,7 +58,6 @@ func run_async_thread(shell_command):
 
 	#print(hacky_command)
 
-	var result
 	var shell_command_internal = game.shell_test(hacky_command)
 
 	shell_command.output = shell_command_internal.output

scenes/card.gd

@@ -115,7 +115,7 @@ func set_energy(new_energy):
 func set_id(new_id):
 	id = new_id
 	var art_path = "res://cards/%s.svg" % new_id
-	var file = File.new()
+	#var file = File.new()
 	#if file.file_exists(art_path):
 	var texture = load(art_path)
 	if texture:

scenes/file_browser.gd

@@ -121,7 +121,6 @@ func update():
 					#var is_visible = false					
 					if repository and repository.there_is_a_git_cache:
 						
-						var deleted_files = Array(repository.shell.run("git status -s | grep '^D' | sed 's/^...//'").split("\n"))
 						# The last entries are empty strings, remove them.
 						
 						for file_path in files:

scenes/game.gd

@@ -142,13 +142,13 @@ func shell_test(command):
 	mutex.lock()
 	#print("go")
 	#print(command)
-	var before = OS.get_ticks_msec()
+	#var before = OS.get_ticks_msec()
 	
 	while not $ShellServer._connected:
 		$ShellServer._process(0.1)
 	
 	var response = $ShellServer.send(command)
-	var after = OS.get_ticks_msec()
+	#var after = OS.get_ticks_msec()
 	#print("took " + str(after-before)+" ms")
 	#print("stop")
 	mutex.unlock()

scenes/main.gd

@@ -44,7 +44,7 @@ func _ready():
 	load_level(game.current_level)
 	input.grab_focus()
 	
-func _process(delta):
+func _process(_delta):
 	if _hint_server.is_connection_available():
 		_hint_client_connection = _hint_server.take_connection()
 		var length = _hint_client_connection.get_u32()

scenes/tcp_server_shell.gd

@@ -1,6 +1,6 @@
 extends Node
 
-signal data_received(string)
+#signal data_received(string)
 signal new_connection
 
 export var port: int