johngmyers: Remove unnecessary IAM permission

JobBuild
12044
07-23 21:15
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pull-kops-verify-bazel 1418681099948658688
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pull-kops-verify-gomod 1418681100015767552
pull-kops-verify-govet 1418681101416665088
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pull-kops-verify-terraform 1418681103081803776