Bug 1450552 - Disable svgr on windows10-64-qr for almost-permafailing. r=jmaher

MozReview-Commit-ID: 650NnXieC53

--HG--
extra : rebase_source : 63daee692f2b1bf9c3098efccc33d5a6391e125d

taskcluster/ci/test/test-sets.yml

@@ -148,7 +148,6 @@ windows-qr-talos:
     - talos-g4
     - talos-perf-reftest
     - talos-perf-reftest-singletons
-    - talos-svgr
     - talos-tp5o
     - talos-speedometer
     - talos-motionmark