fix(dogfood): re-enable process priority management for dogfood (#15765)

- The dogfood-related bugs with this feature are (hopefully) resolved.

This reverts commit 19ec6af2ad.

dogfood/contents/main.tf

@@ -349,6 +349,9 @@ resource "docker_container" "workspace" {
   env = [
     "CODER_AGENT_TOKEN=${coder_agent.dev.token}",
     "USE_CAP_NET_ADMIN=true",
+    "CODER_PROC_PRIO_MGMT=1",
+    "CODER_PROC_OOM_SCORE=10",
+    "CODER_PROC_NICE_SCORE=1",
   ]
   host {
     host = "host.docker.internal"