docs: remove banner after survey expiration (#44949)
docs: remove banner after survey expiration (#44949)

The survey is now over. We can remove the banner.

PR Close #44949

angular/angular,gkalpak/angular,manekinekko/angular,gnomeontherun/angular,gnomeontherun/angular,JiaLiPassion/angular,shairez/angular,angular/angular,gkalpak/angular,manekinekko/angular,gkalpak/angular,angular-indonesia/angular,manekinekko/angular,JiaLiPassion/angular,manekinekko/angular,manekinekko/angular,gnomeontherun/angular,angular/angular,shairez/angular,shairez/angular,JiaLiPassion/angular,JiaLiPassion/angular,shairez/angular,gnomeontherun/angular,angular-indonesia/angular,angular-indonesia/angular,manekinekko/angular,angular-indonesia/angular,shairez/angular,gkalpak/angular,angular/angular