chore(mac): drops one local mac-only helper .sh b/c redundant

mac/Keyman4MacIM/make-km-dmg.sh

@@ -46,7 +46,7 @@ cd `dirname ${KEYMAN_MACIM_BASE_PATH}` > /dev/null
 KEYMAN_MACIM_BASE_PATH=`pwd`;
 popd  > /dev/null
 
-. $KEYMAN_MACIM_BASE_PATH/../bashHelperFunctions.sh
+. "$KEYMAN_ROOT/resources/shellHelperFunctions.sh"
 
 KM_APP_NAME="Install Keyman.app"
 OUTPUT_DIR="$KEYMAN_MACIM_BASE_PATH/output"

mac/Keyman4MacIM/write-download_info.sh

@@ -34,7 +34,7 @@ cd `dirname ${KEYMAN_MACIM_BASE_PATH}` > /dev/null
 KEYMAN_MACIM_BASE_PATH=`pwd`;
 popd  > /dev/null
 
-. $KEYMAN_MACIM_BASE_PATH/../bashHelperFunctions.sh
+. "$KEYMAN_ROOT/resources/shellHelperFunctions.sh"
 
 DEST_DIR="$KEYMAN_MACIM_BASE_PATH/output/upload"
 ADD_VERSION_TO_DEST_DIR=true

mac/bashHelperFunctions.sh

@@ -1,33 +0,0 @@
-#!/usr/bin/env bash
-
-# TODO: deprecate and replace with shellHelperFunctions.sh.
-
-# The following allows coloring of warning and error lines, but only works if there's a
-# terminal attached, so not on the build machine.
-if ! [[ "$TERM" == "" || "$TERM" == "dumb" ]]; then
-    ERROR_RED=$(tput setaf 1)
-    WARNING_YELLOW=$(tput setaf 3)
-    NORMAL=$(tput sgr0)
-fi
-
-displayInfo() {
-    if [ "$QUIET" != true ]; then
-        while [[ $# -gt 0 ]] ; do
-            echo $1
-            shift # past argument
-        done
-    fi
-}
-
-assertFileExists() {
-    if ! [ -f $1 ]; then
-        builder_die "Build failed:  missing $1"
-    fi
-}
-
-assertValidVersionNbr()
-{
-    if [[ "$1" == "" || ! "$1" =~ ^[0-9]+\.[0-9]+\.[0-9]+$ ]]; then
-        builder_die "Specified version not valid: '$1'. Version should be in the form Major.Minor.BuildCounter"
-    fi
-}