diff --git a/taskcluster/ci/build/linux.yml b/taskcluster/ci/build/linux.yml
index 661251e64172..c9ac03712482 100644
--- a/taskcluster/ci/build/linux.yml
+++ b/taskcluster/ci/build/linux.yml
@@ -67,46 +67,6 @@ linux64-plain/opt:
         - linux64-node
         - linux64-cbindgen
 
-linux64/pgo:
-    description: "Linux64 PGO"
-    # Disabled because bug 1516114 shows up much more often
-    # use-pgo: true
-    index:
-        product: firefox
-        job-name: linux64-pgo
-    attributes:
-        enable-full-crashsymbols: true
-    treeherder:
-        platform: linux64/pgo
-        # Bug 1516114
-        symbol: B
-        # symbol: Bpgo(B)
-    worker-type: aws-provisioner-v1/gecko-{level}-b-linux
-    worker:
-        max-run-time: 9000
-    run:
-        using: mozharness
-        actions: [get-secrets, build, check-test]
-        options: [enable-pgo]
-        config:
-            - builds/releng_base_firefox.py
-            - builds/releng_base_linux_64_builds.py
-        script: "mozharness/scripts/fx_desktop_build.py"
-        secrets: true
-        tooltool-downloads: public
-        need-xvfb: true
-        # Bug 1516114
-        # mozconfig-variant: profile-use
-    toolchains:
-        - linux64-binutils
-        - linux64-clang
-        - linux64-rust
-        - linux64-rust-size
-        - linux64-cbindgen
-        - linux64-sccache
-        - linux64-nasm
-        - linux64-node
-
 linux64-fuzzing/debug:
     description: "Linux64 Fuzzing Debug"
     index:
@@ -461,41 +421,6 @@ linux/debug:
         - linux64-nasm
         - linux64-node
 
-linux/pgo:
-    description: "Linux32 PGO"
-    index:
-        product: firefox
-        job-name: linux-pgo
-    attributes:
-        enable-full-crashsymbols: true
-    treeherder:
-        platform: linux32/pgo
-        symbol: B
-    worker-type: aws-provisioner-v1/gecko-{level}-b-linux
-    worker:
-        docker-image: {in-tree: debian7-i386-build}
-        max-run-time: 9000
-    run:
-        using: mozharness
-        actions: [get-secrets, build, check-test]
-        options: [enable-pgo]
-        config:
-            - builds/releng_base_firefox.py
-            - builds/releng_base_linux_32_builds.py
-        script: "mozharness/scripts/fx_desktop_build.py"
-        secrets: true
-        tooltool-downloads: public
-        need-xvfb: true
-    toolchains:
-        - linux64-binutils
-        - linux64-clang
-        - linux64-rust
-        - linux64-rust-size
-        - linux64-cbindgen
-        - linux64-sccache
-        - linux64-nasm
-        - linux64-node
-
 linux-rusttests/opt:
     description: "Linux32 Rust Tests Opt"
     index:
diff --git a/taskcluster/ci/test/test-platforms.yml b/taskcluster/ci/test/test-platforms.yml
index ea7c4bf7061e..5b4cb5132b7b 100644
--- a/taskcluster/ci/test/test-platforms.yml
+++ b/taskcluster/ci/test/test-platforms.yml
@@ -91,21 +91,7 @@ linux64-devedition/opt:
         - opt-only-tests
         - desktop-screenshot-capture
 
-# TODO: use 'pgo' and 'asan' labels here, instead of -pgo/opt
-linux64-pgo/opt:
-    build-platform: linux64-pgo/opt
-    test-sets:
-        - common-tests
-        - web-platform-tests
-        - opt-only-tests
-        - desktop-screenshot-capture
-        - talos
-        - awsy
-        - mochitest-headless
-        - linux-talos-flex
-        - raptor-firefox
-        - raptor-fetch-firefox
-
+# TODO: use 'asan' label here, instead of -asan/opt
 linux64-asan/opt:
     build-platform: linux64-asan/opt
     test-sets:
@@ -128,15 +114,6 @@ linux64-qr/opt:
         - web-platform-tests
         - raptor-firefox
         - raptor-fetch-firefox
-linux64-pgo-qr/opt:
-    build-platform: linux64-pgo/opt
-    test-sets:
-        - linux-qr-tests
-        - talos
-        - awsy
-        - web-platform-tests
-        - raptor-firefox
-        - raptor-fetch-firefox
 linux64-shippable-qr/opt:
     build-platform: linux64-shippable/opt
     test-sets: