refactor: remove unused bash report helper functions

With every bash :report subcommand now ported to golang, the shared fn-report-parse-args, fn-report-emit-json, fn-report-filter-global and fn-report-validate-format helpers are no longer referenced and are removed.

plugins/common/functions

@@ -1028,62 +1028,3 @@ fn-registry-docker-config-dir() {
     echo "$config_dir"
   fi
 }
-
-fn-report-parse-args() {
-  declare desc="strips --format and --global flags from a report invocation, populating REPORT_FORMAT, REPORT_IS_GLOBAL, REPORT_ARGS"
-  REPORT_FORMAT="stdout"
-  REPORT_IS_GLOBAL="false"
-  REPORT_ARGS=()
-  while [[ $# -gt 0 ]]; do
-    case "$1" in
-      --format)
-        REPORT_FORMAT="$2"
-        shift 2
-        ;;
-      --global)
-        REPORT_IS_GLOBAL="true"
-        shift
-        ;;
-      *)
-        REPORT_ARGS+=("$1")
-        shift
-        ;;
-    esac
-  done
-}
-
-fn-report-emit-json() {
-  declare desc="serializes a flag_map array (passed by name) as a JSON object, stripping the --<prefix>- prefix from each key"
-  declare flag_map_name="$1" prefix="$2"
-  local -n flag_map_ref="$flag_map_name"
-  local json_output="{}"
-  for flag in "${flag_map_ref[@]}"; do
-    local key value
-    key="$(echo "$flag" | cut -d':' -f1 | sed "s/^--${prefix}-//")"
-    value="$(echo "$flag" | cut -d':' -f2- | sed 's/^ //')"
-    json_output="$(echo "$json_output" | jq -c --arg key "$key" --arg value "$value" '. + {($key): $value}')"
-  done
-  echo "$json_output"
-}
-
-fn-report-filter-global() {
-  declare desc="filters a flag_map array (passed by name) in place, keeping only entries with -global- in their flag name"
-  declare flag_map_name="$1"
-  local -n flag_map_ref="$flag_map_name"
-  local filtered=()
-  for flag in "${flag_map_ref[@]}"; do
-    local key="$(echo "$flag" | cut -d':' -f1)"
-    if [[ "$key" == *"-global-"* ]]; then
-      filtered+=("$flag")
-    fi
-  done
-  flag_map_ref=("${filtered[@]}")
-}
-
-fn-report-validate-format() {
-  declare desc="rejects --format json when an info flag is also specified"
-  declare FORMAT="$1" INFO_FLAG="$2"
-  if [[ "$FORMAT" != "stdout" ]] && [[ -n "$INFO_FLAG" ]]; then
-    dokku_log_fail "--format flag cannot be specified when specifying an info flag"
-  fi
-}