Disallow loos assembly in Solidity by permanently setting it to SyntaxError (from Warning)

libsolidity/analysis/ReferencesResolver.cpp

@@ -277,7 +277,7 @@ bool ReferencesResolver::visit(InlineAssembly const& _inlineAssembly)
 	// Will be re-generated later with correct information
 	// We use the latest EVM version because we will re-run it anyway.
 	assembly::AsmAnalysisInfo analysisInfo;
-	boost::optional<Error::Type> errorTypeForLoose = m_experimental050Mode ? Error::Type::SyntaxError : Error::Type::Warning;
+	boost::optional<Error::Type> errorTypeForLoose = Error::Type::SyntaxError;
 	assembly::AsmAnalyzer(analysisInfo, errorsIgnored, EVMVersion(), errorTypeForLoose, assembly::AsmFlavour::Loose, resolver).analyze(_inlineAssembly.operations());
 	return false;
 }

libsolidity/analysis/TypeChecker.cpp

@@ -927,15 +927,11 @@ bool TypeChecker::visit(InlineAssembly const& _inlineAssembly)
 	};
 	solAssert(!_inlineAssembly.annotation().analysisInfo, "");
 	_inlineAssembly.annotation().analysisInfo = make_shared<assembly::AsmAnalysisInfo>();
-	boost::optional<Error::Type> errorTypeForLoose =
-		m_scope->sourceUnit().annotation().experimentalFeatures.count(ExperimentalFeature::V050) ?
-		Error::Type::SyntaxError :
-		Error::Type::Warning;
 	assembly::AsmAnalyzer analyzer(
 		*_inlineAssembly.annotation().analysisInfo,
 		m_errorReporter,
 		m_evmVersion,
-		errorTypeForLoose,
+		Error::Type::SyntaxError,
 		assembly::AsmFlavour::Loose,
 		identifierAccess
 	);