internal/fetch: delete invalid platform in loadPackage

Change-Id: I3e53f632c0d9f743744371c7ecc5e576585545a4
Reviewed-on: https://go-review.googlesource.com/c/pkgsite/+/277772
Run-TryBot: Baokun Lee <bk@golangcn.org>
TryBot-Result: kokoro <noreply+kokoro@google.com>
Reviewed-by: Jonathan Amsterdam <jba@google.com>
Trust: Jamal Carvalho <jamal@golang.org>
diff --git a/internal/fetch/load.go b/internal/fetch/load.go
index 9fcce8c..06c87cd 100644
--- a/internal/fetch/load.go
+++ b/internal/fetch/load.go
@@ -51,7 +51,6 @@
 	{"windows", "amd64"},
 	{"darwin", "amd64"},
 	{"js", "wasm"},
-	{"linux", "js"},
 }
 
 // loadPackage loads a Go package by calling loadPackageWithBuildContext, trying