Clean up optional header comments

Author: ividito

raster_api/runtime/src/app.py

@@ -155,7 +155,6 @@ async def lifespan(app: FastAPI):
         stacViewerExtension(),
     ],
     colormap_dependency=ColorMapParams,
-    # optional_headers=optional_headers,
 )
 app.include_router(
     stac.router,
@@ -176,7 +175,6 @@ async def lifespan(app: FastAPI):
         stacViewerExtension(),
     ],
     colormap_dependency=ColorMapParams,
-    # optional_headers=optional_headers,
 )
 app.include_router(
     stac_alt.router,
@@ -197,7 +195,6 @@ async def lifespan(app: FastAPI):
         cogViewerExtension(),
     ],
     colormap_dependency=ColorMapParams,
-    # optional_headers=optional_headers,
 )
 
 app.include_router(cog.router, tags=["Cloud Optimized GeoTIFF"], prefix="/cog")