CMAKE: Fix RPM version

before fix:
CPack: - package: ... rdc-0.6.0-local.9999.el9.x86_64.rpm generated.

after fix:
CPack: - package: ... rdc-0.6.0.50600-local.9999.el9.x86_64.rpm generated.

Change-Id: I684816f3b4cad787eec6abbb40598d05c89d4f5d
Signed-off-by: Galantsev, Dmitrii <dmitrii.galantsev@amd.com>

CMakeLists.txt

@@ -519,7 +519,6 @@ set(CPACK_RPM_RUNTIME_PRE_UNINSTALL_SCRIPT_FILE
     "${CMAKE_CURRENT_SOURCE_DIR}/RPM/rpm_preun")
 set(CPACK_RPM_RUNTIME_POST_UNINSTALL_SCRIPT_FILE
     "${CMAKE_CURRENT_SOURCE_DIR}/RPM/rpm_postun")
-set(CPACK_RPM_PACKAGE_VERSION ${VERSION_STRING})
 
 # Treat runtime group as package base.
 # Without it - the base package would be named 'rdc-runtime'