head positive test. don't use base64 encoder

daemon/test/JsonCommanderTest.cpp

@@ -2,7 +2,6 @@
 #include <gtest/gtest.h>
 
 #include "../include/JsonCommander.h"
-#include "../include/base64.h"
 #include "FileManagerMock.h"
 
 namespace {
@@ -885,7 +884,7 @@ TEST(Head, Positive) {
 	message["file"] = file;
 
 	std::vector<char> bytes = {'a', 'b', 'c', 'd', 'e', 'f', 'g', 'h'};
-	const std::string bytesAsString = base64::encodeVector(bytes);
+	const std::string bytesAsString = "YWJjZGVmZ2g=";
 	EXPECT_CALL(fileManager, getBytesFromFile(testing::_, testing::_)).WillOnce(testing::Return(std::make_pair(bytes, FileManager::headError::no_error)));
 
 	JsonCommander::Response response = jsonCommander.execute(message);