Go: Update list of expected files for single-go-mod-and-go-files-not-under-it test

Author: mbg

go/ql/integration-tests/all-platforms/go/single-go-mod-and-go-files-not-under-it/test.expected

@@ -1,6 +1,4 @@
 extractedFiles
-| src/go.mod:0:0:0:0 | src/go.mod |
-| src/main.go:0:0:0:0 | src/main.go |
 | src/subdir/go.mod:0:0:0:0 | src/subdir/go.mod |
 | src/subdir/subsubdir/add.go:0:0:0:0 | src/subdir/subsubdir/add.go |
 | src/subdir/test.go:0:0:0:0 | src/subdir/test.go |