platform/x86: thinkpad_acpi: remove trailing semicolon in macro definition

The macro use will already have a semicolon.
Signed-off-by: Tom Rix <trix@redhat.com>
Link: https://lore.kernel.org/r/20201127181024.2771890-1-trix@redhat.comSigned-off-by: Hans de Goede <hdegoede@redhat.com>

drivers/platform/x86/thinkpad_acpi.c

@@ -1025,7 +1025,7 @@ static struct attribute_set *create_attr_set(unsigned int max_members,
 }
 
 #define destroy_attr_set(_set) \
-	kfree(_set);
+	kfree(_set)
 
 /* not multi-threaded safe, use it in a single thread per set */
 static int add_to_attr_set(struct attribute_set *s, struct attribute *attr)