BareMetal: Convert to Tr::tr

Change-Id: I7ac423c13d95b33cad332d2ce9fafb4f658980bc
Reviewed-by: Alessandro Portale <alessandro.portale@qt.io>
Reviewed-by: <github-actions-qt-creator@cristianadam.eu>

src/plugins/baremetal/iarewparser.cpp

@@ -11,8 +11,7 @@
 using namespace ProjectExplorer;
 using namespace Utils;
 
-namespace BareMetal {
-namespace Internal {
+namespace BareMetal::Internal {
 
 // Helpers:
 
@@ -222,8 +221,7 @@ void IarParser::flush()
     m_lines = 0;
 }
 
-} // namespace Internal
-} // namespace BareMetal
+} // BareMetal::Internal
 
 // Unit tests: