Deprecate sys.linker.use_generated_config property

sys.linker.use_generated_config property was introduced at the beginning
of linkerconfig development to skip this generated configuration if it
does not work properly during dev. However, linkerconfig development is
now completed and is working properly from most of devices, so this
property is no longer in use. Therefore deprecating this property as
this would not be used.

Bug: 149335054
Test: m -j passed
Test: No linking error from Cuttlefish and Crosshatch
Change-Id: I0a1b3f36b69872862196b1613718a75d482e0a92
diff --git a/linker/linker.cpp b/linker/linker.cpp
index 0e68259..3eb064c 100644
--- a/linker/linker.cpp
+++ b/linker/linker.cpp
@@ -3498,16 +3498,12 @@
     return path;
   }
 
-  // Use generated linker config if flag is set
-  // TODO(b/138920271) Do not check property once it is confirmed as stable
-  if (android::base::GetBoolProperty("sys.linker.use_generated_config", true)) {
-    if (file_exists(kLdGeneratedConfigFilePath)) {
-      return kLdGeneratedConfigFilePath;
-    } else {
-      // TODO(b/146386369) : Adjust log level and add more condition to log only when necessary
-      INFO("Warning: failed to find generated linker configuration from \"%s\"",
-           kLdGeneratedConfigFilePath);
-    }
+  if (file_exists(kLdGeneratedConfigFilePath)) {
+    return kLdGeneratedConfigFilePath;
+  } else {
+    // TODO(b/146386369) : Adjust log level and add more condition to log only when necessary
+    INFO("Warning: failed to find generated linker configuration from \"%s\"",
+         kLdGeneratedConfigFilePath);
   }
 
   path = get_ld_config_file_vndk_path();