go.mod: remove replace directive, and declare Go 1.17 as minimum version (#56)

* go.mod: remove replace directive

This replace directive was added in d3f39e3,
and may have been for testing, and accidentally left behind.

Signed-off-by: Sebastiaan van Stijn <github@gone.nl>

* go.mod: declare Go 1.17 as minimum version

Go 1.17 is the oldest version covered by CI. Declare it explicitly to avoid
Go tooling adding the currently installed toolchain version when updating the
module file.

Signed-off-by: Sebastiaan van Stijn <github@gone.nl>

---------

Signed-off-by: Sebastiaan van Stijn <github@gone.nl>

Author: thaJeztah

go.mod

@@ -1,5 +1,5 @@
 module github.com/sasha-s/go-deadlock
 
-require github.com/petermattis/goid v0.0.0-20250813065127-a731cc31b4fe
+go 1.17
 
-replace github.com/sasha-s/go-deadlock => /src/go-deadlock
+require github.com/petermattis/goid v0.0.0-20250813065127-a731cc31b4fe