Try this

Author: DanielVandH

Project.toml

@@ -7,14 +7,12 @@ version = "1.6.2"
 AdaptivePredicates = "35492f91-a3bd-45ad-95db-fcad7dcfedb7"
 EnumX = "4e289a0a-7415-4d19-859d-a7e5c4648b56"
 ExactPredicates = "429591f6-91af-11e9-00e2-59fbe8cec110"
-PrecompileTools = "aea7be01-6a6a-4083-8856-8a6e6704d82a"
 Random = "9a3f8284-a2c9-5f02-9a11-845980a1fd5c"
 
 [compat]
 AdaptivePredicates = "1.2"
 EnumX = "1.0"
 ExactPredicates = "2.2"
-PrecompileTools = "1.2"
 Random = "1"
 Test = "1"
 julia = "1.6"

src/DelaunayTriangulation.jl

@@ -6,7 +6,6 @@ import ExactPredicates as EP
 import AdaptivePredicates as AP
 import EnumX
 import Random
-import PrecompileTools
 
 abstract type AbstractPredicateKernel end # needs to be defined early for use in data_structures.jl
 const PredicateCacheType = Union{Nothing, <:Tuple}
@@ -20,6 +19,4 @@ include("validation.jl")
 include("exports.jl")
 include("public.jl")
 
-include("precompile.jl")
-
 end