First of all, removing unwanted hair from the body is an act of fitrah. Referring to this, the Prophet (peace and blessings be upon him) is reported to have said “Thefitrah is five things: circumcision, trimming the mustache, cutting the nails, plucking the armpit hairs, and shaving the pubic hairs” (Al-Bukhari and Muslim).
There is nothing wrong for a man removing unwanted hair from his body by means of waxing or any other safe method as long as the method used is not harmful and does not include uncovering `awrah in front another person with the exception of a spouse.
It is noteworthy that there some hairs that a man is required or recommended not to remove such as the hair of the eyebrows, beard, etc., so a man should not wax these hairs.