[lldb] Remove redundant WithFormat suffixes (NFC)

Replace calls to FooWithFormat() with calls to Foo() when only one
argument is provided and the given string doesn't need to be formatted.

lldb/source/Expression/Materializer.cpp

@@ -797,7 +797,7 @@ public:
 
       llvm::Optional<size_t> opt_bit_align = m_type.GetTypeBitAlign(exe_scope);
       if (!opt_bit_align) {
-        err.SetErrorStringWithFormat("can't get the type alignment");
+        err.SetErrorString("can't get the type alignment");
         return;
       }