Dumb Question About Routing Firewall and Switch

Firewall: Cisco ASA 5512-X

Switch: Aruba 3810M (L3)

Switch IP: 10.240.1.254

Firewall IP: 10.240.1.1

DHCP Server (Win): 10.240.1.253

Setup from inside to outside

Switch -> Firewall -> ISP Fortigate Firewall -> ISP Modem -> Internet

I have a question about routing that im trying to understand.

Take one of my vlan for example: 10.240.10.0/24 (Corporate)

In the firewall the routing is set

route inside 10.240.10.0 255.255.255.0 10.240.1.254

VLAN is configured on the switch

IP addressing is assigned by DHCP server

On the Switch the default route is set to the firewall

ip default-gateway 10.240.1.1

ip route 0.0.0.0 0.0.0.0 10.240.1.1

ip routing

So our switch is sending all our inside traffic to the firewall to reach the internet

but now the firewall also has a route command inside sending inside traffic to the switch.

Im a little confused on this setup and how its working. I assume the route on the firewall I can get rid of?