tests: simplify go.mod, remove go.sum file

Author: ydnar

tests/go.mod

@@ -1,20 +1,3 @@
 module tests
 
 go 1.22.0
-
-require github.com/bytecodealliance/wasm-tools-go v0.3.1
-
-replace github.com/bytecodealliance/wasm-tools-go => ../
-
-require (
-	github.com/coreos/go-semver v0.3.1 // indirect
-	github.com/docker/libtrust v0.0.0-20160708172513-aabc10ec26b7 // indirect
-	github.com/klauspost/compress v1.17.11 // indirect
-	github.com/opencontainers/go-digest v1.0.0 // indirect
-	github.com/regclient/regclient v0.7.2 // indirect
-	github.com/sirupsen/logrus v1.9.3 // indirect
-	github.com/ulikunitz/xz v0.5.12 // indirect
-	github.com/urfave/cli/v3 v3.0.0-alpha9.2 // indirect
-	golang.org/x/mod v0.21.0 // indirect
-	golang.org/x/sys v0.26.0 // indirect
-)