fix(install.sh): remove url validation (false negatives, redundant)

pnpm/pnpm#7336

Removed url validation since it fails sometimes even though the actual download would succeed. It is also fairly pointless to begin with, only preventing the creation and deletion of a temporary directory.

SHASUMS256.txt

@@ -4,5 +4,5 @@ d6e6538b8fa1147a58efac1ed2bf7f3311aecd5d8e1b11c0070794a5c5b151d8  v6.6.js
 c80817f1dac65ee497fc8ca0b533e497aacfbf951a917ff4652825710bbacda7  v6.14.js
 675896fe510fe86a6c4812c46334aafe789a05dd60652cca768b78971ca2b906  v6.16.js
 be155eed896aa8c7900352c2b28640bcbace13171ec632b0e29f0ac94e5b27d1  v6.32.js
-df09f85bfcdffe6c2a1bd0966bdd65404859b72b64e941244e65dcd2d9148485  install.sh
+f8c728b2048a92948aff1979db70e21e89f410528d2d133112f1e2acc0214b34  install.sh
 7881ea9b132eb7c6d12db6f14ca55bbb5d251edf08693d570eac31ad0d00c827  install.ps1

install.sh

@@ -31,17 +31,6 @@ download() {
   fi
 }
 
-validate_url() {
-  local url
-  url="$1"
-
-  if command -v curl > /dev/null 2>&1; then
-    curl --output /dev/null --silent --show-error --location --head --fail "$url"
-  else
-    wget --spider --quiet "$url"
-  fi
-}
-
 is_glibc_compatible() {
   getconf GNU_LIBC_VERSION >/dev/null 2>&1 || ldd --version >/dev/null 2>&1 || return 1
 }
@@ -106,8 +95,6 @@ download_and_install() {
     archive_url="${archive_url}.exe"
   fi
 
-  validate_url "$archive_url"  || abort "pnpm version '${version}' could not be found"
-
   # install to PNPM_HOME, defaulting to ~/.pnpm
   tmp_dir="$(mktemp -d)" || abort "Tmpdir Error!"
   trap 'rm -rf "$tmp_dir"' EXIT INT TERM HUP