Bug 1594520 - Avoid duplication in .vscode/tasks.json r=jya

These options default to outer contexts so we don't need to repeat ourselves.
We were already setting the top level values anyways.

Differential Revision: https://phabricator.services.mozilla.com/D52081

--HG--
extra : moz-landing-system : lando

.vscode/tasks.json

@@ -2,6 +2,7 @@
     // See https://go.microsoft.com/fwlink/?LinkId=733558
     // for the documentation about the tasks.json format
     "version": "2.0.0",
+    "type": "shell",
     "command": "${workspaceRoot}/mach",
     "windows": {
       "command": "\"\\mozilla-build\\start-shell.bat mach\""
@@ -11,22 +12,15 @@
     "tasks": [
       {
         "label": "clobber-python",
-        "type":"shell",
-        "command": "${workspaceRoot}/mach",
-        "windows": {
-          "command": "\"\\mozilla-build\\start-shell.bat mach\""
-        },
         "args": ["clobber", "python"],
         "problemMatcher": []
       },
       {
         "label": "configure",
-        "type":"shell",
         "problemMatcher": []
       },
       {
         "label": "build",
-        "type":"shell",
         "problemMatcher": {
           "owner": "cpp",
           "fileLocation": "absolute",
@@ -42,11 +36,6 @@
       },
       {
         "label": "build-binaries",
-        "type":"shell",
-        "command": "${workspaceRoot}/mach",
-        "windows": {
-          "command": "\"\\mozilla-build\\start-shell.bat mach\""
-        },
         "args": ["--log-no-times", "build", "binaries"],
         "problemMatcher": {
           "owner": "cpp",
@@ -67,11 +56,6 @@
       },
       {
         "label": "build-faster",
-        "type":"shell",
-        "command": "${workspaceRoot}/mach",
-        "windows": {
-          "command": "\"\\mozilla-build\\start-shell.bat mach\""
-        },
         "args": ["--log-no-times", "build", "faster"],
         "problemMatcher": {
           "owner": "cpp",
@@ -88,38 +72,25 @@
       },
       {
         "label": "run",
-        "type":"shell",
         "args": ["-purgecaches"],
         "problemMatcher": []
       },
       {
         "label": "lint-wo",
-        "type":"shell",
-        "command": "${workspaceRoot}/mach",
-        "windows": {
-          "command": "\"\\mozilla-build\\start-shell.bat mach\""
-        },
         "args": ["lint", "-wo"],
         "problemMatcher": ["$eslint-stylish"]
       },
       {
         "label": "eslint",
-        "type": "shell",
         "problemMatcher": ["$eslint-stylish"]
       },
       {
         "label": "eslint-fix",
-        "type":"shell",
-        "command": "${workspaceRoot}/mach",
-        "windows": {
-          "command": "\"\\mozilla-build\\start-shell.bat mach\""
-        },
         "args": ["eslint", "--fix", "${file}"],
         "problemMatcher": ["$eslint-stylish"]
       },
       {
         "label": "test",
-        "type":"shell",
         "args": ["${relativeFile}"],
         "group":"test",
         "presentation": {
@@ -129,7 +100,6 @@
       },
       {
         "label": "mochitest",
-        "type":"shell",
         "args": ["${relativeFile}"],
         "problemMatcher": {
           "fileLocation": ["relative", "${workspaceRoot}"],
@@ -147,7 +117,6 @@
       },
       {
         "label": "reftest",
-        "type":"shell",
         "args": ["${relativeFile}"],
         "problemMatcher": {
           "fileLocation": ["absolute"],
@@ -165,7 +134,6 @@
       },
       {
         "label": "xpcshell-test",
-        "type":"shell",
         "args": ["${relativeFile}", "--sequential"],
         "problemMatcher": {
           "fileLocation": ["relative", "${workspaceRoot}"],