Some journals may not expressly have a policy because it's actually assumed that a lack of IRB approval would halt a research project from taking place well before the publication phase. For example, several Schools of Public Health require all work to go through IRB determination before they begin. Similarly, many funders require a statement of IRB approval.
Given that, some journal examples:
American Journal of Epidemiology: "If a study has involved any contact with human subjects or if it is otherwise appropriate, authors should state in their Methods section that their institution's review board has approved the study proposal, as well as the manner in which informed consent was obtained from subjects (if applicable). Authors should follow the principles outlined in the Declaration of Helsinki (41st World Medical Assembly. Declaration of Helsinki: recommendations guiding physicians in biomedical research involving human subjects. Bull Pan Am Health Organ. 1990;24:606-609)."
Epidemiology: "It is the authors' responsibility to verify that any study involving human subjects has been approved by the committee on research ethics at the institution where the research was conducted, in accordance with the Declaration of Helsinki of the World Medical Association. State in the manuscript that such approval was received and, where applicable, that study participants gave informed consent."
New England Journal of Medicine: "In appropriate places in the manuscript, please provide the following items: If applicable, a statement that the research protocol was approved by the relevant institutional review boards or ethics committees and that all human participants gave written informed consent"
The Royal Society: "For experiments involving human subjects, the committee approving the experiments should be identified and the research conducted according to the principles expressed in the Declaration of Helsinki. The authors should confirm that informed consent was obtained from all subjects."
Proceedings of the National Academy of Sciences: "Research involving Human and Animal Participants and Clinical Trials must have been approved by the author's institutional review board. Authors must include in the Methods section a brief statement identifying the institutional and/or licensing committee approving the experiments. For all experiments involving human participants, authors must also include a statement confirming that informed consent was obtained from all participants, or provide a statement why this was not necessary. All experiments must have been conducted according to the principles expressed in the Declaration of Helsinki. Authors must follow the International Committee of Medical Journal Editors' policy and deposit trial information and design into an accepted clinical trial registry before the onset of patient enrollment. For animal studies, authors must report the species, strain, sex, and age of the animals."
The last two are definitively not social science/medicine only journals.