vendor-example: Remove unused variables

Signed-off-by: George Liu <liuxiwei@ieisystem.com>
Change-Id: Ied841ed523faf8a51b9f4dd991e122a029278df8
diff --git a/vendor-example/get_latest_version.cpp b/vendor-example/get_latest_version.cpp
index 38dea2c..9274c5f 100644
--- a/vendor-example/get_latest_version.cpp
+++ b/vendor-example/get_latest_version.cpp
@@ -2,10 +2,6 @@
 #include <string>
 #include <vector>
 
-// Get the version string for a PSU and output to stdout
-// In this example, it just returns the last 8 bytes as the version
-constexpr int NUM_OF_BYTES = 8;
-
 int main(int argc, char** argv)
 {
     if (argc < 2)