chore: remove yamllint

Signed-off-by: CrazyMax <crazy-max@users.noreply.github.com>

.yamllint.yml

@@ -1,13 +0,0 @@
-ignore: |
-  /vendor
-
-extends: default
-
-yaml-files:
-  - '*.yaml'
-  - '*.yml'
-
-rules:
-  truthy: disable
-  line-length: disable
-  document-start: disable

hack/dockerfiles/lint.Dockerfile

@@ -3,10 +3,8 @@
 ARG GO_VERSION=1.18
 
 FROM golang:${GO_VERSION}-alpine
-RUN apk add --no-cache git gcc musl-dev yamllint
+RUN apk add --no-cache git gcc musl-dev
 RUN wget -O- -nv https://raw.githubusercontent.com/golangci/golangci-lint/master/install.sh | sh -s v1.45.2
 WORKDIR /go/src/github.com/docker/buildx
 RUN --mount=target=/go/src/github.com/docker/buildx --mount=target=/root/.cache,type=cache \
   golangci-lint run
-RUN --mount=target=/go/src/github.com/docker/buildx --mount=target=/root/.cache,type=cache \
-  yamllint -c .yamllint.yml --strict .