Drop -ms suffix for request options

This is a leftover artifact from recent refactorings but now that it's
using a `duration` type which holds its value in nanoseconds the `-ms`
suffix is no longer required.

Closes WebAssembly#78

wit/types.wit

@@ -191,7 +191,7 @@ interface types {
     append: func(name: field-key, value: field-value) -> result<_, header-error>;
 
     /// Retrieve the full set of keys and values in the Fields. Like the
-    /// constructor, the list represents each key-value pair. 
+    /// constructor, the list represents each key-value pair.
     ///
     /// The outer list represents each key-value pair in the Fields. Keys
     /// which have multiple values are represented by multiple entries in this
@@ -319,27 +319,27 @@ interface types {
     constructor();
 
     /// The timeout for the initial connect to the HTTP Server.
-    connect-timeout-ms: func() -> option<duration>;
+    connect-timeout: func() -> option<duration>;
 
     /// Set the timeout for the initial connect to the HTTP Server. An error
     /// return value indicates that this timeout is not supported.
-    set-connect-timeout-ms: func(ms: option<duration>) -> result;
+    set-connect-timeout: func(ms: option<duration>) -> result;
 
     /// The timeout for receiving the first byte of the Response body.
-    first-byte-timeout-ms: func() -> option<duration>;
+    first-byte-timeout: func() -> option<duration>;
 
     /// Set the timeout for receiving the first byte of the Response body. An
     /// error return value indicates that this timeout is not supported.
-    set-first-byte-timeout-ms: func(ms: option<duration>) -> result;
+    set-first-byte-timeout: func(ms: option<duration>) -> result;
 
     /// The timeout for receiving subsequent chunks of bytes in the Response
     /// body stream.
-    between-bytes-timeout-ms: func() -> option<duration>;
+    between-bytes-timeout: func() -> option<duration>;
 
     /// Set the timeout for receiving subsequent chunks of bytes in the Response
     /// body stream. An error return value indicates that this timeout is not
     /// supported.
-    set-between-bytes-timeout-ms: func(ms: option<duration>) -> result;
+    set-between-bytes-timeout: func(ms: option<duration>) -> result;
   }
 
   /// Represents the ability to send an HTTP Response.