diff --git a/streams.go b/streams.go
index 8f9325c..dc0e00f 100644
--- a/streams.go
+++ b/streams.go
@@ -5,7 +5,6 @@ package runtime
 import (
 	"context"
 	"errors"
-	"time"
 
 	"github.com/TeoSlayer/pilotprotocol/pkg/coreapi"
 	"github.com/TeoSlayer/pilotprotocol/pkg/daemon"
@@ -78,9 +77,7 @@ func (s *streamAdapter) LocalPort() uint16        { return s.conn.LocalPort }
 func (s *streamAdapter) RemoteAddr() coreapi.Addr { return s.conn.RemoteAddr }
 func (s *streamAdapter) RemotePort() uint16       { return s.conn.RemotePort }
 
-func (s *streamAdapter) SetDeadline(time.Time) error      { return nil }
-func (s *streamAdapter) SetReadDeadline(time.Time) error  { return nil }
-func (s *streamAdapter) SetWriteDeadline(time.Time) error { return nil }
+
 
 var (
 	_ coreapi.Streams  = daemonStreams{}
diff --git a/zz_streams_ceiling_test.go b/zz_streams_ceiling_test.go
index 48eaaec..6ab6e58 100644
--- a/zz_streams_ceiling_test.go
+++ b/zz_streams_ceiling_test.go
@@ -9,7 +9,6 @@ import (
 	"net"
 	"strings"
 	"testing"
-	"time"
 
 	"github.com/TeoSlayer/pilotprotocol/pkg/coreapi"
 	"github.com/TeoSlayer/pilotprotocol/pkg/daemon"
@@ -155,16 +154,9 @@ func TestDaemonListener_AcceptDeliversStreamWithAccessors(t *testing.T) {
 		t.Errorf("RemotePort = %d, want 8888", got)
 	}
 
-	// The deadline shims are documented no-ops returning nil.
-	if err := stream.SetDeadline(time.Now().Add(time.Hour)); err != nil {
-		t.Errorf("SetDeadline: %v", err)
-	}
-	if err := stream.SetReadDeadline(time.Now().Add(time.Hour)); err != nil {
-		t.Errorf("SetReadDeadline: %v", err)
-	}
-	if err := stream.SetWriteDeadline(time.Now().Add(time.Hour)); err != nil {
-		t.Errorf("SetWriteDeadline: %v", err)
-	}
+	// Deadline methods were removed from coreapi.Stream (PILOT-79).
+	// The runtime cannot honor them; removing from the interface
+	// gives callers a compile-time signal instead of a silent no-op.
 
 	// Closing the stream goes through daemon.CloseConnection, which for
 	// a synthetic conn in StateClosed exits via the non-ESTABLISHED