chore: remove toolchain from go.mod

rh-pre-commit.version: 2.3.2
rh-pre-commit.check-secrets: ENABLED

Signed-off-by: RTann <[email protected]>

Author: RTann

go.mod

@@ -2,8 +2,6 @@ module github.com/quay/claircore
 
 go 1.23.0
 
-toolchain go1.24.1
-
 require (
 	github.com/Masterminds/semver v1.5.0
 	github.com/doug-martin/goqu/v8 v8.6.0