[TASK] Removes fulltext index

Due to not being able to satisfy the "compare database"
in Install Tool, the option fulltext will be removed.

ext_tables.sql

@@ -38,7 +38,6 @@ CREATE TABLE tx_t3omembership_domain_model_member (
 	PRIMARY KEY (uid),
 	KEY parent (pid),
 	KEY subscription_no (subscription_no),
-	FULLTEXT (name),
 	KEY language (l10n_parent,sys_language_uid)
 );