The changes to disable the modules happened in zesty. These are the ones that are no longer enabled:
DRM_TDFX: 3dfx Banshee/Voodoo3+
DRM_R128: ATI Rage 128
DRM_I810: ATI Rage 128
DRM_MGA: Matrox g200/g400
DRM_SIS: SiS video cards
DRM_VIA: Via unichrome video cards
DRM_SAVAGE: Savage video cards
The changes to disable the modules happened in zesty. These are the ones that are no longer enabled:
DRM_TDFX: 3dfx Banshee/Voodoo3+
DRM_R128: ATI Rage 128
DRM_I810: ATI Rage 128
DRM_MGA: Matrox g200/g400
DRM_SIS: SiS video cards
DRM_VIA: Via unichrome video cards
DRM_SAVAGE: Savage video cards