CARRY: Remove Golang image workaround

Author: sutaakar

build/images/training-operator/Dockerfile.rhoai

@@ -1,23 +1,4 @@
-ARG GOLANG_IMAGE=registry.access.redhat.com/ubi9/go-toolset:1.23
-# Go versioning workaround for lack of go-toolset for version 1.23
-FROM registry.access.redhat.com/ubi9/go-toolset:1.23 AS golang
-
-FROM registry.access.redhat.com/ubi9/ubi:latest AS builder
-
-ARG GOLANG_VERSION=1.23.0
-
-# Install system dependencies
-RUN dnf upgrade -y && dnf install -y \
-    gcc \
-    make \
-    openssl-devel \
-    && dnf clean all && rm -rf /var/cache/yum
-
-# Install Go
-ENV PATH=/usr/local/go/bin:$PATH
-
-ARG GOLANG_DIR=/usr/lib/golang
-COPY --from=golang ${GOLANG_DIR} /usr/local/go
+FROM registry.access.redhat.com/ubi9/go-toolset:1.23 AS builder
 
 WORKDIR /workspace
 # Copy the Go Modules manifests