feat!: remove methods with Optional params from LiveRequest.Builder

PiperOrigin-RevId: 879518204

Author: tilgalas

core/src/main/java/com/google/adk/agents/LiveRequest.java

@@ -77,18 +77,12 @@ public abstract static class Builder {
     @JsonProperty("content")
     public abstract Builder content(@Nullable Content content);
 
-    public abstract Builder content(Optional<Content> content);
-
     @JsonProperty("blob")
     public abstract Builder blob(@Nullable Blob blob);
 
-    public abstract Builder blob(Optional<Blob> blob);
-
     @JsonProperty("close")
     public abstract Builder close(@Nullable Boolean close);
 
-    public abstract Builder close(Optional<Boolean> close);
-
     abstract LiveRequest autoBuild();
 
     public final LiveRequest build() {