Addressed review comments - removed SoftwareVersion message and rep…

…laced it with `SemanticVersion`

Signed-off-by: Ivan Malygin <ivan@swirldslabs.com>

platform/state/platform_state.proto

@@ -68,7 +68,7 @@ message PlatformState {
      * <p>
      * This SHALL be the software version that created this state.
      */
-    SoftwareVersion creation_software_version = 3;
+    proto.SemanticVersion creation_software_version = 3;
 
     /**
      * A number of non-ancient rounds.
@@ -100,14 +100,14 @@ message PlatformState {
     proto.Timestamp last_frozen_time = 7;
 
     /**
-     * A consensus node software version.<br/>
+     * A consensus node semantic version.<br/>
      * The software version that enabled birth round mode.
      * <p>
      * This SHALL be unset if birth round migration has not yet happened.<br/>
      * If birth round migration is complete, this SHALL be the _first_ software
      * version that enabled birth round mode.
      */
-    SoftwareVersion first_version_in_birth_round_mode = 8;
+    proto.SemanticVersion first_version_in_birth_round_mode = 8;
 
     /**
      * A consensus round.<br/>
@@ -138,33 +138,6 @@ message PlatformState {
 }
 
 
-/**
- * A consensus node software version.
- *
- * This message records version information for configuration, the Hedera
- * API, and the "Services" subsystems.
- */
-message SoftwareVersion {
-    /**
-     * A single numeric version.<br/>
-     * This is the current configuration version read on node startup.
-     */
-    uint32 config_version = 1;
-
-    /**
-     * A semantic version entry.<br/>
-     * This is the version of the HAPI module (Hedera API).
-     */
-    proto.SemanticVersion hapi_version = 2;
-
-    /**
-     * A semantic version entry.<br/>
-     * This is the version of the services module.
-     */
-    proto.SemanticVersion services_version = 3;
-}
-
-
 /**
  * A consensus snapshot.<br/>
  * This is a snapshot of the consensus state for a particular round.