Bump collab min version to 0.134 (#16918)

0.05% of requests use a version less than this today; and it lets us get
  rid of a bunch of versioning we no longer need.

Release Notes:

- N/A

crates/collab/src/rpc/connection_pool.rs

@@ -32,11 +32,7 @@ impl fmt::Display for ZedVersion {
 
 impl ZedVersion {
     pub fn can_collaborate(&self) -> bool {
-        self.0 >= SemanticVersion::new(0, 129, 2)
-    }
-
-    pub fn with_save_as() -> ZedVersion {
-        ZedVersion(SemanticVersion::new(0, 134, 0))
+        self.0 >= SemanticVersion::new(0, 134, 0)
     }
 
     pub fn with_list_directory() -> ZedVersion {
@@ -48,28 +44,6 @@ impl ZedVersion {
     }
 }
 
-pub trait VersionedMessage {
-    fn required_host_version(&self) -> Option<ZedVersion> {
-        None
-    }
-}
-
-impl VersionedMessage for proto::SaveBuffer {
-    fn required_host_version(&self) -> Option<ZedVersion> {
-        if self.new_path.is_some() {
-            Some(ZedVersion::with_save_as())
-        } else {
-            None
-        }
-    }
-}
-
-impl VersionedMessage for proto::OpenNewBuffer {
-    fn required_host_version(&self) -> Option<ZedVersion> {
-        Some(ZedVersion::with_save_as())
-    }
-}
-
 #[derive(Serialize)]
 pub struct Connection {
     pub principal_id: PrincipalId,