[Infrastructure] Remove compilation warning exception sign-compare (AliceO2Group#8908)

Author: vkucera

dependencies/O2PhysicsCompileFlags.cmake

@@ -14,7 +14,7 @@ include_guard()
 set(CMAKE_CXX_FLAGS "${CMAKE_CXX_FLAGS} -Wall -Wextra")
 
 # Enabled warnings supported by Clang and GCC, not treated as errors
-set(O2PHYSICS_WARNINGS_COMMON_NO_ERROR "sign-compare")
+set(O2PHYSICS_WARNINGS_COMMON_NO_ERROR "")
 
 # Enabled warnings supported by Clang only, not treated as errors
 set(O2PHYSICS_WARNINGS_CLANG_NO_ERROR "")