Remove it from the pack package list too

Signed-off-by: Nicholas Lawson <70027408+nick-l-o3de@users.noreply.github.com>

Author: nick-l-o3de

package_build_list_host_darwin.json

@@ -74,7 +74,6 @@
         "OpenMesh-8.1-rev3-mac": "package-system/OpenMesh-mac",
         "OpenSSL-3.6.3-rev1-mac": "package-system/OpenSSL/temp/OpenSSL-mac",
         "OpenSSL-3.6.3-rev1-ios": "package-system/OpenSSL/temp/OpenSSL-ios",
-        "Imath-3.2.2-rev1-mac": "package-system/Imath/temp/Imath-mac",
         "OpenEXR-3.1.3-rev4-mac": "package-system/OpenEXR/temp/OpenEXR-mac",
         "openimageio-opencolorio-2.3.17-rev3-mac": "package-system/openimageio-opencolorio/temp/package-darwin",
         "tiff-4.2.0.15-rev3-mac": "package-system/tiff-mac",