chore: remove https/ftp hack

Change-Id: Ia7b4d4260687c12ece8c854446ebe14101fda13b

lib/yashchiki/fetch.sh

@@ -140,29 +140,6 @@ if (( $(cat "${tmpfiles_concretize_err[@]}" | wc -l) > 0 )); then
     fi
 fi
 
-# --- 8< --- 8< --- 8< --- 8< --- 8< --- 8< --- 8< --- 8< --- 8< --- 8< ---
-####################
-# WORKAROUND START #
-####################
-# Switch to http for ftpmirror.gnu.org
-
-# The https-version of ftpmirror.gnu.org sometimes redirects to old
-# servers that have no secure (according to curl) SSL versions available,
-# leading to the following error:
-
-# ```
-# curl: (35) error:1425F102:SSL routines:ssl_choose_client_version:unsupported protocol
-# ```
-
-# Since we are downloading public software and can verify its contents via
-# hashes, there is no benefit of using https -> fall back to http.
-
-find "${MY_SPACK_FOLDER}/var/spack/repos" -type f -print0 \
-    | xargs -0 sed -i "s|https://ftpmirror.gnu.org|http://ftpmirror.gnu.org|g"
-##################
-# WORKAROUND END #
-##################
-# --- 8< --- 8< --- 8< --- 8< --- 8< --- 8< --- 8< --- 8< --- 8< --- 8< ---
 
 # now fetch everything that is needed in order
 packages_to_fetch=(