diff --git a/internal/vulncheck/slicing.go b/internal/vulncheck/slicing.go
index 71fffc4..0bfa160 100644
--- a/internal/vulncheck/slicing.go
+++ b/internal/vulncheck/slicing.go
@@ -44,12 +44,3 @@
 	}
 	return seen
 }
-
-// pruneSet removes functions in `set` that are in `toPrune`.
-func pruneSet(set, toPrune map[*ssa.Function]bool) {
-	for f := range set {
-		if !toPrune[f] {
-			delete(set, f)
-		}
-	}
-}
diff --git a/internal/vulncheck/utils.go b/internal/vulncheck/utils.go
index dcfc9cd..e752f4a 100644
--- a/internal/vulncheck/utils.go
+++ b/internal/vulncheck/utils.go
@@ -16,7 +16,6 @@
 	"golang.org/x/tools/go/callgraph/cha"
 	"golang.org/x/tools/go/callgraph/vta"
 	"golang.org/x/tools/go/packages"
-	"golang.org/x/tools/go/ssa/ssautil"
 	"golang.org/x/tools/go/types/typeutil"
 	"golang.org/x/vuln/internal"
 	"golang.org/x/vuln/internal/osv"
@@ -71,12 +70,8 @@
 		return nil, err
 	}
 	initial := cha.CallGraph(prog)
-	allFuncs := ssautil.AllFunctions(prog)
 
 	fslice := forwardSlice(entrySlice, initial)
-	// Keep only actually linked functions.
-	pruneSet(fslice, allFuncs)
-
 	if err := ctx.Err(); err != nil { // cancelled?
 		return nil, err
 	}
@@ -85,8 +80,6 @@
 	// Repeat the process once more, this time using
 	// the produced VTA call graph as the base graph.
 	fslice = forwardSlice(entrySlice, vtaCg)
-	pruneSet(fslice, allFuncs)
-
 	if err := ctx.Err(); err != nil { // cancelled?
 		return nil, err
 	}