[infra] Remove --no-pull-base-images.
[infra] Remove --no-pull-base-images.

This is redundant. We can just call `build_image` directly to bypass
cache and not pull.

google/oss-fuzz,google/oss-fuzz,google/oss-fuzz,skia-dev/oss-fuzz,vitalybuka/oss-fuzz,google/oss-fuzz,googlefonts/oss-fuzz,googlefonts/oss-fuzz,skia-dev/oss-fuzz,ssbr/oss-fuzz,kcc/oss-fuzz,googlefonts/oss-fuzz,vitalybuka/oss-fuzz,skia-dev/oss-fuzz,googlefonts/oss-fuzz,vitalybuka/oss-fuzz,kcc/oss-fuzz,robertswiecki/oss-fuzz,kcc/oss-fuzz,skia-dev/oss-fuzz,google/oss-fuzz,oliverchang/oss-fuzz,robertswiecki/oss-fuzz,kcc/oss-fuzz,skia-dev/oss-fuzz,googlefonts/oss-fuzz,skia-dev/oss-fuzz,skia-dev/oss-fuzz,robertswiecki/oss-fuzz,skia-dev/oss-fuzz,ssbr/oss-fuzz,FeliciaLim/oss-fuzz,robertswiecki/oss-fuzz,googlefonts/oss-fuzz,oliverchang/oss-fuzz,google/oss-fuzz,kcc/oss-fuzz,oliverchang/oss-fuzz,ssbr/oss-fuzz,oliverchang/oss-fuzz,google/oss-fuzz,FeliciaLim/oss-fuzz,google/oss-fuzz,google/oss-fuzz,vitalybuka/oss-fuzz,vitalybuka/oss-fuzz,google/oss-fuzz,skia-dev/oss-fuzz,robertswiecki/oss-fuzz,robertswiecki/oss-fuzz,robertswiecki/oss-fuzz,oliverchang/oss-fuzz,googlefonts/oss-fuzz,robertswiecki/oss-fuzz,robertswiecki/oss-fuzz,googlefonts/oss-fuzz,ssbr/oss-fuzz,FeliciaLim/oss-fuzz,FeliciaLim/oss-fuzz,skia-dev/oss-fuzz,google/oss-fuzz,robertswiecki/oss-fuzz,robertswiecki/oss-fuzz,ssbr/oss-fuzz,skia-dev/oss-fuzz,googlefonts/oss-fuzz,googlefonts/oss-fuzz,FeliciaLim/oss-fuzz