remove unused helpers.coffee

fixes #46

app/assets/javascripts/application/modules/helpers.coffee

@@ -1,29 +0,0 @@
-Postal.Helpers =
-  numberWithDelimiters: (number)->
-    number.toString().replace(/\B(?=(\d{3})+(?!\d))/g, ",")
-
-  pluralize: (number, word)->
-    if number == 1
-      "1 #{word}"
-    else
-      "#{number} #{word}s"
-
-  numberToHumanSize: (sizeInBytes)->
-    wholes = Math.floor(Math.log(sizeInBytes) / Math.log(1024))
-    unit = ['bytes', 'KB', 'MB', 'GB', 'TB'][wholes]
-    i = (sizeInBytes / Math.pow(1024, wholes))
-    if unit
-      i = if unit == 'bytes' then i.toFixed(0) else i.toFixed(2)
-      "#{i} #{unit}"
-    else
-      "0 bytes"
-
-  styleWidth: (width)->
-    width = 100 if width > 100.0
-    width = 0 if width < 0
-    string = "width:#{width}%;"
-    if width >= 100
-      string = string + "background-color:#e2383a;"
-    else if width >= 90
-      string = string + "background-color:#e8581f;"
-    string