entry block: Allow multi-line opening statement

It may be that there isn't a 1-1 correspondance between blocks and lines
of code. For a contrived example, you might want to wrap the parameter
list, or include a documentation comment. And in particular, a future
commit will add a preamble inside the generated function for an entry
block that converts a parameter to a different type. Or you could
imagine wanting to generate a top-level variable or signal to accompany
an entry block.

Author: wjt

addons/block_code/ui/blocks/entry_block/entry_block.gd

@@ -22,8 +22,4 @@ func get_entry_statement() -> String:
 	for pair in param_name_input_pairs:
 		formatted_statement = formatted_statement.replace("{%s}" % pair[0], pair[1].get_string())
 
-	# One line, should not have \n
-	if formatted_statement.find("\n") != -1:
-		push_error("Entry block has multiline statement.")
-
 	return formatted_statement