Remove the default setting of cmake install libdir from source code

Any default value if required should be controlled from outside.
For ROCM, build script is setting the value to "lib"

Change-Id: I12a2951307fe64e46a4e608476bfceb678bdc97d

CMakeLists.txt

@@ -52,10 +52,8 @@ set(ROCM_SMI_PACKAGE rocm-smi-lib)
 
 project(${AMD_SMI_LIBS_TARGET})
 
-set(COMMON_PROJ_ROOT ${PROJECT_SOURCE_DIR})
-# Set default libdir to be "lib" for ROCm, distros/users can override this
-set(CMAKE_INSTALL_LIBDIR "lib" CACHE STRING "Library install directory")
 include(GNUInstallDirs)
+set(COMMON_PROJ_ROOT ${PROJECT_SOURCE_DIR})
 
 ## Verbose output.
 set(CMAKE_VERBOSE_MAKEFILE on)