Revert "audio: Use hardcoded r_submix configuration with XML"

Revert submission 2770886-AidlAudioHalModuleConfig

Reason for revert: Breaks BluetoothInstrumentationTests on main downstream

Reverted changes: /q/submissionid:2770886-AidlAudioHalModuleConfig

Bug: 305291602
Change-Id: I7f51ab94f5d42ac052e9900ddd0cc69a33856820
diff --git a/audio/aidl/default/AudioPolicyConfigXmlConverter.cpp b/audio/aidl/default/AudioPolicyConfigXmlConverter.cpp
index 2f1282a..5d06cb6 100644
--- a/audio/aidl/default/AudioPolicyConfigXmlConverter.cpp
+++ b/audio/aidl/default/AudioPolicyConfigXmlConverter.cpp
@@ -184,15 +184,9 @@
             // 'primary' in the XML schema used by HIDL is equivalent to 'default' module.
             const std::string name =
                     xsdcModule.getName() != "primary" ? xsdcModule.getName() : "default";
-            if (name != "r_submix") {
-                mModuleConfigurations->emplace_back(
-                        name, VALUE_OR_FATAL(convertModuleConfigToAidl(xsdcModule)));
-            } else {
-                // See the note on the 'getRSubmixConfiguration' function.
-                mModuleConfigurations->emplace_back(name, nullptr);
-            }
+            mModuleConfigurations->emplace_back(
+                    name, VALUE_OR_FATAL(convertModuleConfigToAidl(xsdcModule)));
         }
     }
 }
-
 }  // namespace aidl::android::hardware::audio::core::internal