source_tree_test_config: remove unused only_test_build_target field

This has been replaced with cq_only_test_builders

BUG=chromium:1062039
TEST=generate

Change-Id: I47a11061ad83c4e4b8b7c508cec14344f12564bc
Reviewed-on: https://chromium-review.googlesource.com/c/chromiumos/infra/proto/+/2110912
Tested-by: Sean Abraham <seanabraham@chromium.org>
Auto-Submit: Sean Abraham <seanabraham@chromium.org>
Reviewed-by: Dhanya Ganesh <dhanyaganesh@chromium.org>
Reviewed-by: David Burger <dburger@chromium.org>
Commit-Queue: Dhanya Ganesh <dhanyaganesh@chromium.org>
Commit-Queue: David Burger <dburger@chromium.org>
diff --git a/go/testplans/source_tree_test_config.pb.go b/go/testplans/source_tree_test_config.pb.go
index c5edc51..fabac3c 100644
--- a/go/testplans/source_tree_test_config.pb.go
+++ b/go/testplans/source_tree_test_config.pb.go
@@ -6,7 +6,6 @@
 import (
 	fmt "fmt"
 	proto "github.com/golang/protobuf/proto"
-	chromiumos "go.chromium.org/chromiumos/infra/proto/go/chromiumos"
 	math "math"
 )
 
@@ -29,11 +28,6 @@
 	DisableVmTests bool `protobuf:"varint,3,opt,name=disable_vm_tests,json=disableVmTests,proto3" json:"disable_vm_tests,omitempty"`
 	// Whether to disable non-Tast-based test suites.
 	DisableNonTastTests bool `protobuf:"varint,5,opt,name=disable_non_tast_tests,json=disableNonTastTests,proto3" json:"disable_non_tast_tests,omitempty"`
-	// A subset of build targets for which testing should be performed.
-	// If this is nonempty, hw/vm tests will *only* be done for the provided
-	// list of build targets.
-	// DEPRECATED: being replaced in favor of cq_only_test_builders.
-	OnlyTestBuildTargets []*chromiumos.BuildTarget `protobuf:"bytes,4,rep,name=only_test_build_targets,json=onlyTestBuildTargets,proto3" json:"only_test_build_targets,omitempty"`
 	// A subset of CQ builders for which testing should be performed.
 	// If this is nonempty, hw/vm tests will *only* be done for the provided
 	// list of build targets.
@@ -89,13 +83,6 @@
 	return false
 }
 
-func (m *TestRestriction) GetOnlyTestBuildTargets() []*chromiumos.BuildTarget {
-	if m != nil {
-		return m.OnlyTestBuildTargets
-	}
-	return nil
-}
-
 func (m *TestRestriction) GetCqOnlyTestBuilders() []*TestRestriction_OnlyTestBuilder {
 	if m != nil {
 		return m.CqOnlyTestBuilders
@@ -246,32 +233,30 @@
 }
 
 var fileDescriptor_9aed450ade7161bc = []byte{
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+	// 393 bytes of a gzipped FileDescriptorProto
+	0x1f, 0x8b, 0x08, 0x00, 0x00, 0x00, 0x00, 0x00, 0x02, 0xff, 0x74, 0x92, 0x4f, 0x8b, 0xda, 0x40,
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 }
diff --git a/src/testplans/source_tree_test_config.proto b/src/testplans/source_tree_test_config.proto
index 13ff66d..e12a12b 100644
--- a/src/testplans/source_tree_test_config.proto
+++ b/src/testplans/source_tree_test_config.proto
@@ -8,7 +8,6 @@
 
 option go_package = "go.chromium.org/chromiumos/infra/proto/go/testplans";
 
-import "chromiumos/common.proto";
 import "testplans/common.proto";
 
 // Testing restrictions to apply to a source tree.
@@ -19,11 +18,6 @@
   bool disable_vm_tests = 3;
   // Whether to disable non-Tast-based test suites.
   bool disable_non_tast_tests = 5;
-  // A subset of build targets for which testing should be performed.
-  // If this is nonempty, hw/vm tests will *only* be done for the provided
-  // list of build targets.
-  // DEPRECATED: being replaced in favor of cq_only_test_builders.
-  repeated chromiumos.BuildTarget only_test_build_targets = 4;
 
   message OnlyTestBuilder {
     string builder_name = 1;
@@ -33,6 +27,8 @@
   // If this is nonempty, hw/vm tests will *only* be done for the provided
   // list of build targets.
   repeated OnlyTestBuilder cq_only_test_builders = 6;
+
+  reserved 4;
 }
 
 // A set of test restrictions for a source tree.