ci: remove unused variable from `.circleci/env.sh` (#34384)
ci: remove unused variable from `.circleci/env.sh` (#34384)

Since #32537, the `.circleci/get-commit-range.js` script is no longer
used in `.circleci/env.sh`. This commit removes the now unused local
variable to the script's path.

PR Close #34384

brandonroberts/angular,blesh/angular,shairez/angular,StephenFluin/angular,StephenFluin/angular,filipesilva/angular,StephenFluin/angular,gkalpak/angular,StephenFluin/angular,IdeaBlade/angular,shairez/angular,angular-indonesia/angular,shairez/angular,gkalpak/angular,matsko/angular,Toxicable/angular,JiaLiPassion/angular,brandonroberts/angular,Toxicable/angular,gnomeontherun/angular,angular-indonesia/angular,alxhub/angular,alxhub/angular,ocombe/angular,Toxicable/angular,manekinekko/angular,gdi2290/angular,gdi2290/angular,blesh/angular,IdeaBlade/angular,brandonroberts/angular,wKoza/angular,matsko/angular,IdeaBlade/angular,gnomeontherun/angular,gkalpak/angular,wKoza/angular,ocombe/angular,wKoza/angular,shairez/angular,vikerman/angular,vikerman/angular,wKoza/angular,StephenFluin/angular,alxhub/angular,filipesilva/angular,ocombe/angular,JiaLiPassion/angular,mgechev/angular,blesh/angular,ocombe/angular,gdi2290/angular,IdeaBlade/angular,gnomeontherun/angular,filipesilva/angular,mgechev/angular,angular/angular,snaptech/angular,manekinekko/angular,manekinekko/angular,alxhub/angular,wKoza/angular,brandonroberts/angular,mgechev/angular,angular-indonesia/angular,filipesilva/angular,blesh/angular,ocombe/angular,alxhub/angular,snaptech/angular,angular-indonesia/angular,snaptech/angular,Toxicable/angular,gdi2290/angular,vikerman/angular,blesh/angular,wKoza/angular,brandonroberts/angular,JiaLiPassion/angular,gdi2290/angular,angular/angular,brandonroberts/angular,gkalpak/angular,gdi2290/angular,snaptech/angular,manekinekko/angular,gnomeontherun/angular,manekinekko/angular,angular/angular,mgechev/angular,manekinekko/angular,angular/angular,matsko/angular,shairez/angular,filipesilva/angular,snaptech/angular,Toxicable/angular,vikerman/angular,mgechev/angular,vikerman/angular,vikerman/angular,Toxicable/angular,matsko/angular,JiaLiPassion/angular,ocombe/angular,matsko/angular,IdeaBlade/angular,snaptech/angular