simplify xud Dockerfile.aarch64

Author: reliveyy

images/xud/Dockerfile.aarch64

@@ -1,9 +1,5 @@
 FROM node:12-alpine3.12 AS builder
-# Use pure JS implemented secp256k1 bindings
-RUN apk add --no-cache git rsync bash musl-dev go python3 make g++
-# Pre-built binaries not found for [email protected] and [email protected] (node-v72 ABI, musl) (falling back to source compile with node-gyp)
-# python: not found
-RUN apk add --no-cache python2
+RUN apk add --no-cache git rsync bash go
 WORKDIR /xud
 ADD .src .
 ARG GIT_REVISION