Revert "[lldb] Add handling of ECError to unit test to validate a hypothesis on the bots"

This reverts commit c86b1b0.

Author: adrian-prantl

lldb/unittests/TestingSupport/Host/SocketTestUtilities.cpp

@@ -110,14 +110,6 @@ static bool CheckIPSupport(llvm::StringRef Proto, llvm::StringRef Addr) {
                 std::make_error_code(std::errc::address_family_not_supported) ||
             ec == std::make_error_code(std::errc::address_not_available))
           HasProtocolError = true;
-      },
-      [&](std::unique_ptr<llvm::ECError> ECErr) {
-        // FIXME: This code path should not be reachable.
-        std::error_code ec = ECErr->convertToErrorCode();
-        if (ec ==
-            std::make_error_code(std::errc::address_family_not_supported) ||
-            ec == std::make_error_code(std::errc::address_not_available))
-          HasProtocolError = true;
       });
   if (HasProtocolError) {
     GTEST_LOG_(WARNING)