remove explorerVisible configuration setting

extensions/npm/package.json

@@ -137,12 +137,6 @@
           },
           "description": "%config.npm.exclude%",
           "scope": "resource"
-        },
-        "npm.explorerVisible": {
-          "type": "boolean",
-          "default": true,
-          "scope": "resource",
-          "description": "%config.npm.explorerVisible%"
         }
       }
     },

extensions/npm/package.nls.json

@@ -5,7 +5,6 @@
 	"config.npm.runSilent": "Run npm commands with the `--silent` option.",
 	"config.npm.packageManager": "The package manager used to run scripts.",
 	"config.npm.exclude": "Configure glob patterns for folders that should be excluded from automatic script detection.",
-	"config.npm.explorerVisible": "Show the npm scripts explorer.",
 	"npm.parseError": "Npm task detection: failed to parse the file {0}",
 	"taskdef.script": "The npm script to customize.",
 	"taskdef.path": "The path to the folder of the package.json file that provides the script. Can be ommitted.",