Revert "[infra] Switch from isolate to RBE-CAS"

This reverts commit 03d69876ff0eb33ac9ae968207a72af505b10502.

Reason for revert: failing

Original change's description:
> [infra] Switch from isolate to RBE-CAS
>
> Bug: skia:10883
> Change-Id: I4bab202c89253248b7c93d23540038f83af97d33
> Reviewed-on: https://skia-review.googlesource.com/c/skia/+/340100
> Commit-Queue: Eric Boren <borenet@google.com>
> Reviewed-by: Weston Tracey <westont@google.com>

TBR=borenet@google.com,westont@google.com

Change-Id: Idf99f74579e44bb6b88dcb2c727d8215a3c70c71
No-Presubmit: true
No-Tree-Checks: true
No-Try: true
Bug: skia:10883
Reviewed-on: https://skia-review.googlesource.com/c/skia/+/341678
Reviewed-by: Eric Boren <borenet@google.com>
diff --git a/go.mod b/go.mod
index fc39a3b..3f4fc71 100644
--- a/go.mod
+++ b/go.mod
@@ -12,11 +12,13 @@
 	github.com/Microsoft/go-winio v0.4.15 // indirect
 	github.com/VividCortex/godaemon v0.0.0-20150910212227-3d9f6e0b234f // indirect
 	github.com/andygrunwald/go-gerrit v0.0.0-20200503132804-ed2419acda39
+	github.com/bazelbuild/remote-apis v0.0.0-20201113154229-1e9ccef3705c // indirect
+	github.com/bazelbuild/remote-apis-sdks v0.0.0-20201120151053-8f976b9bf4fc // indirect
 	github.com/boltdb/bolt v1.3.1 // indirect
 	github.com/flynn/json5 v0.0.0-20160717195620-7620272ed633
 	github.com/golang/glog v0.0.0-20160126235308-23def4e6c14b
 	github.com/google/addlicense v0.0.0-20190510175307-22550fa7c1b0 // indirect
-	github.com/google/go-cmp v0.5.4 // indirect
+	github.com/google/go-cmp v0.5.3 // indirect
 	github.com/google/licenseclassifier v0.0.0-20201113175434-78a70215ca36 // indirect
 	github.com/google/uuid v1.1.2
 	github.com/huin/goserial v0.0.0-20121012073615-7b90efdb22b1 // indirect
@@ -34,19 +36,17 @@
 	github.com/stretchr/testify v1.6.1
 	github.com/vektra/mockery v1.1.2 // indirect
 	github.com/xanzy/ssh-agent v0.3.0 // indirect
-	go.chromium.org/luci v0.0.0-20201202134105-6d694edf1d32 // indirect
+	go.chromium.org/luci v0.0.0-20201121231857-b9ab316d7198 // indirect
 	go.skia.org/infra v0.0.0-20201207203943-872c83842f7f
-	golang.org/x/crypto v0.0.0-20201124201722-c8d3bf9c5392
+	golang.org/x/crypto v0.0.0-20201117144127-c1f2f97bffc9
 	golang.org/x/exp v0.0.0-20200228211341-fcea875c7e85 // indirect
 	golang.org/x/image v0.0.0-20191009234506-e7c1f5e7dbb8 // indirect
-	golang.org/x/mod v0.4.0 // indirect
-	golang.org/x/net v0.0.0-20201201195509-5d6afe98e0b7 // indirect
+	golang.org/x/net v0.0.0-20201110031124-69a78807bb2b // indirect
 	golang.org/x/oauth2 v0.0.0-20201109201403-9fd604954f58
-	golang.org/x/sys v0.0.0-20201201145000-ef89a241ccb3 // indirect
-	golang.org/x/term v0.0.0-20201126162022-7de9c90e9dd1 // indirect
-	golang.org/x/tools v0.0.0-20201202100533-7534955ac86b // indirect
+	golang.org/x/sys v0.0.0-20201119102817-f84b799fce68 // indirect
+	golang.org/x/tools v0.0.0-20201121010211-780cb80bd7fb // indirect
 	golang.org/x/xerrors v0.0.0-20200804184101-5ec99f83aff1
 	google.golang.org/api v0.35.0
-	google.golang.org/genproto v0.0.0-20201202151023-55d61f90c1ce // indirect
+	google.golang.org/genproto v0.0.0-20201119123407-9b1e624d6bc4 // indirect
 	sigs.k8s.io/structured-merge-diff v0.0.0-20190525122527-15d366b2352e // indirect
 )