Remove broken packages

shells/java.nix

@@ -4,9 +4,8 @@
 with pkgs;
 mkShell {
   buildInputs = [
-    # openjdk8  # Legacy Java 8 VM.
-    # openjdk11 # Current LTS version of OpenJDK.
-    openjdk14   # Current version of OpenJDK.
+    jre8
+    jdk8
   ];
   shellHook = ''
   '';

shells/python.nix

@@ -6,9 +6,9 @@ mkShell {
   buildInputs = [
     python310Packages.pip
     python310Packages.pip-tools
-    python310Packages.python-lsp-black
-    python310Packages.python-lsp-server
-    python310Packages.python-lsp-jsonrpc
+    # python310Packages.python-lsp-black    #TODO: Marked broken.
+    # python310Packages.python-lsp-server   #TODO: Marked broken.
+    # python310Packages.python-lsp-jsonrpc  #TODO: Marked broken.
   ];
   shellHook = ''
   '';