Use logging and error libraries from function-sdk-go

Remove our direct dependency on crossplane-runtime by using the error and
logging packages included in function-sdk-go in place of the ones from
crossplane-runtime. These packages behave identically to the crossplane-runtime
versions.

Signed-off-by: Adam Wolfe Gordon <[email protected]>

Author: adamwg

fn.go

@@ -3,8 +3,8 @@ package main
 import (
 	"context"
 
-	"github.com/crossplane/crossplane-runtime/pkg/errors"
-	"github.com/crossplane/crossplane-runtime/pkg/logging"
+	"github.com/crossplane/function-sdk-go/errors"
+	"github.com/crossplane/function-sdk-go/logging"
 	fnv1 "github.com/crossplane/function-sdk-go/proto/v1"
 	"github.com/crossplane/function-sdk-go/request"
 	"github.com/crossplane/function-sdk-go/response"

fn_test.go

@@ -9,7 +9,7 @@ import (
 	"google.golang.org/protobuf/testing/protocmp"
 	"google.golang.org/protobuf/types/known/durationpb"
 
-	"github.com/crossplane/crossplane-runtime/pkg/logging"
+	"github.com/crossplane/function-sdk-go/logging"
 	fnv1 "github.com/crossplane/function-sdk-go/proto/v1"
 	"github.com/crossplane/function-sdk-go/resource"
 	"github.com/crossplane/function-sdk-go/response"

go.mod

@@ -6,7 +6,6 @@ toolchain go1.23.2
 
 require (
 	github.com/alecthomas/kong v0.9.0
-	github.com/crossplane/crossplane-runtime v1.18.0
 	github.com/crossplane/function-sdk-go v0.4.0
 	github.com/google/go-cmp v0.6.0
 	google.golang.org/protobuf v1.34.3-0.20240816073751-94ecbc261689
@@ -16,6 +15,7 @@ require (
 
 require (
 	dario.cat/mergo v1.0.1 // indirect
+	github.com/crossplane/crossplane-runtime v1.18.0 // indirect
 	github.com/davecgh/go-spew v1.1.2-0.20180830191138-d8f796af33cc // indirect
 	github.com/emicklei/go-restful/v3 v3.11.0 // indirect
 	github.com/evanphx/json-patch/v5 v5.9.0 // indirect