Revert "lib/net/http/response.rb: support raw deflate correctly"

This reverts commit 5105240b1e851410020b3b3f1a2bead7ffdd4291.

In RFC 2616:

```
   deflate
        The "zlib" format defined in RFC 1950 [31] in combination with
        the "deflate" compression mechanism described in RFC 1951 [29].
```

So "Content-Encoding: deflate" means zlib format, not raw deflate.

[Bug #11268]

1 files changed, 3 insertions, 3 deletions

diff --git a/lib/net/http/response.rb b/lib/net/http/response.rb
index 7c89876d44..5a94f95694 100644
--- a/lib/net/http/response.rb
+++ b/lib/net/http/response.rb
@@ -264,7 +264,7 @@ class Net::HTTPResponse
     when 'deflate', 'gzip', 'x-gzip' then
       self.delete 'content-encoding'
 
-      inflate_body_io = Inflater.new(@socket, v.downcase == "deflate")
+      inflate_body_io = Inflater.new(@socket)
 
       begin
         yield inflate_body_io
@@ -358,10 +358,10 @@ class Net::HTTPResponse
     ##
     # Creates a new Inflater wrapping +socket+
 
-    def initialize(socket, raw_deflate)
+    def initialize socket
       @socket = socket
       # zlib with automatic gzip detection
-      @inflate = Zlib::Inflate.new(raw_deflate ? -Zlib::MAX_WBITS : 32 + Zlib::MAX_WBITS)
+      @inflate = Zlib::Inflate.new(32 + Zlib::MAX_WBITS)
     end
 
     ##