remove duplicate code

Author: samtkaplan

Project.toml

@@ -1,6 +1,6 @@
 name = "AzStorage"
 uuid = "c6697862-1611-5eae-9ef8-48803c85c8d6"
-version = "2.8.0"
+version = "2.8.1"
 
 [deps]
 AbstractStorage = "14dbef02-f468-5f15-853e-5ec8dee7b899"

src/AzStorage.jl

@@ -572,13 +572,6 @@ Update the metadata of a blob `o::AzObject`, changing the dataset's 'LAST MODIFI
 """
 Base.touch(o::AzObject) = touch(o.container, o.name)
 
-"""
-    touch(io::AzObject)
-
-Create a zero-byte object for `io`.  See `touch(container::AzContainer, blobname)`.
-"""
-Base.touch(o::AzObject) = touch(o.container, o.name)
-
 """
     writedlm(container, "blobname", data, args...; options...)