Implemented assignments

src/build/FunctionCall.go

@@ -2,7 +2,6 @@ package build
 
 import (
 	"git.akyoto.dev/cli/q/src/build/expression"
-	"git.akyoto.dev/cli/q/src/build/token"
 )
 
 // CompileFunctionCall compiles a top-level function call.
@@ -26,8 +25,3 @@ func (f *Function) CompileFunctionCall(expr *expression.Expression) error {
 
 	return nil
 }
-
-// isFunctionCall returns true if the expression is a function call.
-func isFunctionCall(expr *expression.Expression) bool {
-	return expr.Token.Kind == token.Operator && expr.Token.Text() == "λ"
-}