feat: remove v1 models (#133)

The v1 protocol effort stalled, but we still have the v1 airbyte_protocol.yaml file in the repo. This is confusing, because it's unclear where updates to the protocol should be made. Discussed with @davinchia here that we should just remove the v1 file and fix forward any potential fallout.

Co-authored-by: Davin Chia <davinchia@gmail.com>

Author: joeykmh

protocol-models/src/main/java/io/airbyte/protocol/models/AirbyteProtocolSchema.java

@@ -11,7 +11,7 @@ public enum AirbyteProtocolSchema {
 
   PROTOCOL("airbyte_protocol.yaml");
 
-  static final Path KNOWN_SCHEMAS_ROOT = JsonSchemas.prepareSchemas("airbyte_protocol", AirbyteProtocolSchema.class);
+  static final Path KNOWN_SCHEMAS_ROOT = JsonSchemas.prepareSchemas("airbyte_protocol/v0", AirbyteProtocolSchema.class);
 
   private final String schemaFilename;