Do not disable static_link_cpp_runtimes when toolchain.supportsEmbed…

…dedRuntimes is not set

    Before, Bazel explicitly added static_link_cpp_runtimes to disabled features, when toolchain didn't set supportsEmbeddedRuntimes. This is unnecessary (if the toolchain doesn't support embeddded runtimes, it can just not create/enable the feature), and it makes migration for bazelbuild/bazel#5883 harder. Let's remove it.

    bazelbuild/bazel#5883
    bazelbuild/bazel#6861

    RELNOTES: None.
    PiperOrigin-RevId: 229188252

dataset/GitHub_Java/bazelbuild.bazel/src/main/java/com/google/devtools/build/lib/rules/cpp/CcCommon.java

@@ -912,12 +912,6 @@ public static FeatureConfiguration configureFeaturesOrThrowEvalException(
       }
       if (branchFdoProvider.isAutoXBinaryFdo()) {
         allFeatures.add(CppRuleClasses.XBINARYFDO);
-        // For LLVM, support implicit enabling of ThinLTO for XFDO unless it has been
-        // explicitly disabled.
-        if (toolchain.isLLVMCompiler()
-            && !allUnsupportedFeatures.contains(CppRuleClasses.THIN_LTO)) {
-          allFeatures.add(CppRuleClasses.ENABLE_XFDO_THINLTO);
-        }
       }
     }
     if (cppConfiguration.getFdoPrefetchHintsLabel() != null) {