misc: remove invisible character from Makefile

Change-Id: I5c09e31bbabcb1d75e27dd3574ebcf83122d56fb
diff --git a/Makefile b/Makefile
index 607a5b4..cf92482 100644
--- a/Makefile
+++ b/Makefile
@@ -151,7 +151,6 @@
 ## Packaging targets ##
 #######################
 
-
 #
 # Traditionally built packages (in Docker containers).
 #