Revert "Docker image for ARM"

This reverts commit 5f7e6a5c73.

scripts/build/build.sh

@@ -8,8 +8,6 @@ set -e
 
 EXTRA_OPTS="$@"
 
-CCARMV7=arm-linux-gnueabihf-gcc
-CCARM64=aarch64-linux-gnu-gcc
 CCX64=/tmp/x86_64-centos6-linux-gnu/bin/x86_64-centos6-linux-gnu-gcc
 
 GOPATH=/go
@@ -28,9 +26,6 @@ fi
 
 echo "Build arguments: $OPT"
 
-go run build.go -goarch armv7 -cc ${CCARMV7} ${OPT} build
-go run build.go -goarch arm64 -cc ${CCARM64} ${OPT} build
-
 CC=${CCX64} go run build.go ${OPT} build
 
 yarn install --pure-lockfile --no-progress
@@ -49,5 +44,3 @@ source /etc/profile.d/rvm.sh
 
 echo "Packaging"
 go run build.go -goos linux -pkg-arch amd64 ${OPT} package-only latest
-go run build.go -goos linux -pkg-arch armv7 ${OPT} package-only latest
-go run build.go -goos linux -pkg-arch arm64 ${OPT} package-only latest