Fix up pystats weeklies

Author: mdboom

bench_runner/templates/_weekly.src.yml

@@ -35,7 +35,6 @@ jobs:
       fork: python
       ref: ${{ needs.determine_head.outputs.commit }}
       benchmarks: all
-      individual: true
       tier2: false
     secrets: inherit
 
@@ -46,7 +45,6 @@ jobs:
       fork: python
       ref: ${{ needs.determine_head.outputs.commit }}
       benchmarks: all
-      individual: true
       tier2: true
     secrets: inherit