Remove creation of has_stubs in cc_library_shared by bp2build

Because when stubs_symbol_file is defined on cc_library_shared, has_stubs is already implied to be true.

Bug: 260771171
Test: go test
Change-Id: I3b9a2cfb9000411d1b5f22da87dc339267775799

bp2build/cc_library_conversion_test.go

@@ -1408,7 +1408,6 @@ func makeCcLibraryTargets(name string, attrs AttrNameToString) []string {
 		"linkopts":                 true,
 		"strip":                    true,
 		"inject_bssl_hash":         true,
-		"has_stubs":                true,
 		"stubs_symbol_file":        true,
 		"use_version_lib":          true,
 	}
@@ -2711,7 +2710,6 @@ func TestCcLibraryStaticDisabledForSomeArch(t *testing.T) {
 
 func TestCcLibraryStubs(t *testing.T) {
 	expectedBazelTargets := makeCcLibraryTargets("a", AttrNameToString{
-		"has_stubs":         `True`,
 		"stubs_symbol_file": `"a.map.txt"`,
 	})
 	expectedBazelTargets = append(expectedBazelTargets, makeCcStubSuiteTargets("a", AttrNameToString{

bp2build/cc_library_shared_conversion_test.go

@@ -543,7 +543,6 @@ cc_library_shared {
     ]`,
 		}),
 			MakeBazelTarget("cc_library_shared", "a", AttrNameToString{
-				"has_stubs":         `True`,
 				"stubs_symbol_file": `"a.map.txt"`,
 			}),
 		},

cc/library.go

@@ -422,8 +422,6 @@ func libraryBp2Build(ctx android.TopDownMutatorContext, m *Module) {
 	}
 
 	if compilerAttrs.stubsSymbolFile != nil && len(compilerAttrs.stubsVersions.Value) > 0 {
-		hasStubs := true
-		sharedTargetAttrs.Has_stubs.SetValue(&hasStubs)
 		sharedTargetAttrs.Stubs_symbol_file = compilerAttrs.stubsSymbolFile
 	}
 
@@ -2936,8 +2934,6 @@ func sharedOrStaticLibraryBp2Build(ctx android.TopDownMutatorContext, module *Mo
 			Fdo_profile: compilerAttrs.fdoProfile,
 		}
 		if compilerAttrs.stubsSymbolFile != nil && len(compilerAttrs.stubsVersions.Value) > 0 {
-			hasStubs := true
-			sharedLibAttrs.Has_stubs.SetValue(&hasStubs)
 			sharedLibAttrs.Stubs_symbol_file = compilerAttrs.stubsSymbolFile
 		}
 		attrs = sharedLibAttrs
@@ -3016,7 +3012,6 @@ type bazelCcLibrarySharedAttributes struct {
 
 	Features bazel.StringListAttribute
 
-	Has_stubs         bazel.BoolAttribute
 	Stubs_symbol_file *string
 
 	Inject_bssl_hash bazel.BoolAttribute