Enable Extrakey in VIA for CFTKB keyboards (#10308)

keyboards/coseyfannitutti/discipad/keymaps/via/rules.mk

@@ -1,4 +1,3 @@
 VIA_ENABLE = yes
 LTO_ENABLE = yes
-EXTRAKEY_ENABLE = no
 MOUSEKEY_ENABLE = no

keyboards/coseyfannitutti/discipline/keymaps/via/rules.mk

@@ -1,4 +1,3 @@
 VIA_ENABLE = yes
 LTO_ENABLE = yes
-EXTRAKEY_ENABLE = no
-MOUSEKEY_ENABLE = no
+MOUSEKEY_ENABLE = no

keyboards/coseyfannitutti/romeo/keymaps/via/rules.mk

@@ -1,4 +1,3 @@
 VIA_ENABLE = yes
 LTO_ENABLE = yes
-EXTRAKEY_ENABLE = no
-MOUSEKEY_ENABLE = no
+MOUSEKEY_ENABLE = no