remove old netbeans versions for compatibity issues

Author: haidubogdan

.github/workflows/nb_modular_package.yml

@@ -18,18 +18,6 @@ jobs:
       matrix:
         label: [18, 19, 20, 21, 22, 23, 24, 25, 26]
         include:
-          - label: 18
-            version: 18-7d33005615b3c744564f3d38ab9ef14bf8c3ec44
-            java: 8
-          - label: 19
-            version: 19-ba85468772292fd64f188f4022f9d49f77f00b89
-            java: 8
-          - label: 20
-            version: 20-91f9ed846ac143b52d50b5ea323a42c2f7e78392
-            java: 8
-          - label: 21
-            version: 21-b15c9b7692b2764be5a997d056e2283b72ae9131 
-            java: 8
           - label: 22
             version: 22-0d0bfcf3faf364a2643238f2a44e1bb6eb8217bd
             java: 8