Revert "audio: exclude the echo reference device in capture position test"

This reverts commit b22f307ccfd1072e3d61deb4e03659db7a168b7d.

Reason for revert: As explained in b/192307382#comment12, the HAL must provide capture positions for the echo reference input regardless of whether there is any actual output.

This should not affect O6/R4 as according to b/192307382#comment10, the VTS tests pass w/o this patch after the HAL has been fixed.

Bug: 192307382
Change-Id: I224bd9de1dcb2e2c8dc138dbfd85f848378aea4f
Test: VtsHalAudioV7_0TargetTest --gtest_filter=*PcmOnlyConfigInputStreamTest*
diff --git a/audio/common/7.0/enums/include/android_audio_policy_configuration_V7_0-enums.h b/audio/common/7.0/enums/include/android_audio_policy_configuration_V7_0-enums.h
index 79243b6..a92a277 100644
--- a/audio/common/7.0/enums/include/android_audio_policy_configuration_V7_0-enums.h
+++ b/audio/common/7.0/enums/include/android_audio_policy_configuration_V7_0-enums.h
@@ -225,14 +225,6 @@
     return isTelephonyDevice(stringToAudioDevice(device));
 }
 
-static inline bool isEchoReferenceDevice(AudioDevice device) {
-    return device == AudioDevice::AUDIO_DEVICE_IN_ECHO_REFERENCE;
-}
-
-static inline bool isEchoReferenceDevice(const std::string& device) {
-    return isEchoReferenceDevice(stringToAudioDevice(device));
-}
-
 static inline bool maybeVendorExtension(const std::string& s) {
     // Only checks whether the string starts with the "vendor prefix".
     static const std::string vendorPrefix = "VX_";
diff --git a/audio/core/all-versions/vts/functional/7.0/AudioPrimaryHidlHalTest.cpp b/audio/core/all-versions/vts/functional/7.0/AudioPrimaryHidlHalTest.cpp
index 79ac295..0b3098b 100644
--- a/audio/core/all-versions/vts/functional/7.0/AudioPrimaryHidlHalTest.cpp
+++ b/audio/core/all-versions/vts/functional/7.0/AudioPrimaryHidlHalTest.cpp
@@ -710,8 +710,7 @@
         // Returning 'true' when no source is found so the test can fail later with a more clear
         // problem description.
         return !maybeSourceAddress.has_value() ||
-               !(xsd::isTelephonyDevice(maybeSourceAddress.value().deviceType) ||
-                 xsd::isEchoReferenceDevice(maybeSourceAddress.value().deviceType));
+               !xsd::isTelephonyDevice(maybeSourceAddress.value().deviceType);
     }
 
     void createPatchIfNeeded() {