refactor(compiler-cli): remove unused closureCompilerEnabled from NgtscProgram (#43148)
refactor(compiler-cli): remove unused closureCompilerEnabled from NgtscProgram (#43148)

remove the NgtscProgram's private field closureCompilerEnabled as that
is not being used in the class itself

PR Close #43148

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