Profiler - Remove buffer to fix memory leaks

Change-Id: Ia3717ccfc147221557f5469965c2abb76b3f451c
Signed-off-by: Galantsev, Dmitrii <dmitrii.galantsev@amd.com>

example/rocprofiler_example.cc

@@ -22,10 +22,8 @@ THE SOFTWARE.
 
 #include <unistd.h>
 
-#include <cstddef>
 #include <iomanip>
 #include <iostream>
-#include <string_view>
 #include <vector>
 
 #include "rdc/rdc.h"
@@ -33,7 +31,7 @@ THE SOFTWARE.
 rdc_handle_t rdc_handle;
 rdc_status_t result;
 
-constexpr std::string_view value_to_string(rdc_field_value value) {
+const std::string value_to_string(rdc_field_value value) {
   switch (value.type) {
     case INTEGER:
       return std::to_string(value.value.l_int);