Remove manifest that no longer works for GeoGebraClassic version 6.0.592.0 (#6169)

manifests/GeoGebra/GeoGebraClassic/6.0.592.0.yaml

@@ -1,34 +0,0 @@
-# ================== General ==================
-Id: GeoGebra.GeoGebraClassic
-Publisher: GeoGebra
-Name: GeoGebraClassic
-Author: GeoGebra
-Description: Solve math problems, graph functions, create geometric constructions, do statistics and calculus, save and share your results. GeoGebra apps are used by millions of students and teachers around the world to learn and teach mathematics and science.
-AppMoniker: geogebraclassic
-Tags: math tool, graphing, geometry, spreadsheet, probability, CAS
-
-# ================== License ==================
-Homepage: https://www.geogebra.org/
-License: Non-commercial freeware; portions under GPL, CC-BY-NC-SA
-LicenseUrl: https://www.geogebra.org/license
-
-# ================= Installer =================
-MinOSVersion: 10.0.0.0
-#Channel: stable                # Channel is not supported in this preview (5/24/2020)
-Version: 6.0.592.0
-
-Switches:
-      Custom: /norestart
-      Silent: /quiet /qn
-      SilentWithProgress: /passive
-      #Interactive:             # Interactive is not supported in this preview (5/24/2020)
-      Language: en-US
-
-InstallerType: msi
-Installers:
-  - Arch: x86
-    Url: https://download.geogebra.org/installers/6.0/GeoGebra-Windows-Installer-6-0-592-0.msi
-    Sha256: 14be9b8698cb4e06794fc51d13147445c39722ec2bfc4d01c9b6dbef9f73caca
-    Scope: machine
-    
-# ManifestVersion: 0.1.0