Remove fairness validation (#239)

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## What was changed
<!-- Describe what has changed in this PR -->

Remove fairness validation from ebb and flow scenario.

## Why?
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Suspected memory leak. And it's not really used anyway.

## Checklist
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1. Closes <!-- add issue number here -->

2. How was this tested:
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3. Any docs updates needed?
<!--- update README if applicable
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Author: stephanos

go.mod

@@ -11,14 +11,14 @@ require (
 	github.com/spf13/pflag v1.0.5
 	github.com/stretchr/testify v1.10.0
 	github.com/temporalio/features v0.0.0-20250808182149-bb2a99cdf200
-	go.temporal.io/api v1.50.0
-	go.temporal.io/sdk v1.35.0
+	go.temporal.io/api v1.53.0
+	go.temporal.io/sdk v1.37.0
 	go.uber.org/zap v1.27.0
-	golang.org/x/exp v0.0.0-20250911091902-df9299821621
 	golang.org/x/mod v0.28.0
 	golang.org/x/sync v0.17.0
 	golang.org/x/sys v0.36.0
-	google.golang.org/protobuf v1.36.5
+	google.golang.org/grpc v1.67.1
+	google.golang.org/protobuf v1.36.6
 )
 
 require (
@@ -35,10 +35,10 @@ require (
 	github.com/facebookgo/clock v0.0.0-20150410010913-600d898af40a // indirect
 	github.com/golang/mock v1.6.0 // indirect
 	github.com/google/go-cmp v0.7.0 // indirect
-	github.com/grpc-ecosystem/go-grpc-middleware v1.4.0 // indirect
+	github.com/grpc-ecosystem/go-grpc-middleware/v2 v2.3.2 // indirect
 	github.com/grpc-ecosystem/grpc-gateway/v2 v2.22.0 // indirect
 	github.com/inconshreveable/mousetrap v1.1.0 // indirect
-	github.com/nexus-rpc/sdk-go v0.3.0 // indirect
+	github.com/nexus-rpc/sdk-go v0.4.0 // indirect
 	github.com/pmezard/go-difflib v1.0.0 // indirect
 	github.com/robfig/cron v1.2.0 // indirect
 	github.com/stretchr/objx v0.5.2 // indirect
@@ -48,7 +48,6 @@ require (
 	golang.org/x/time v0.6.0 // indirect
 	google.golang.org/genproto/googleapis/api v0.0.0-20240827150818-7e3bb234dfed // indirect
 	google.golang.org/genproto/googleapis/rpc v0.0.0-20240827150818-7e3bb234dfed // indirect
-	google.golang.org/grpc v1.66.0 // indirect
 	gopkg.in/yaml.v3 v3.0.1 // indirect
 )
 

go.sum

@@ -15,7 +15,5 @@ type WorkflowOutput struct {
 }
 
 type ActivityTiming struct {
-	FairnessKey     string        `json:"k"`
-	FairnessWeight  float32       `json:"w"`
 	ScheduleToStart time.Duration `json:"d"`
 }