[release.theia] package.json: run npm dedupe

Duplicated package dependency was found and vsce package was unhappy.

For golang/vscode-go#1038

Change-Id: I10cb6ec1cf72bd163cdb5fde730c000b836506e7
Reviewed-on: https://go-review.googlesource.com/c/vscode-go/+/278790
Trust: Hyang-Ah Hana Kim <hyangah@gmail.com>
Run-TryBot: Hyang-Ah Hana Kim <hyangah@gmail.com>
TryBot-Result: kokoro <noreply+kokoro@google.com>
Reviewed-by: Rebecca Stambler <rstambler@golang.org>
diff --git a/package-lock.json b/package-lock.json
index 1d59e1f..5bfc3c7 100644
--- a/package-lock.json
+++ b/package-lock.json
@@ -4720,13 +4720,6 @@
       "requires": {
         "mkdirp": "^0.5.5",
         "vscode-debugprotocol": "1.42.0"
-      },
-      "dependencies": {
-        "vscode-debugprotocol": {
-          "version": "1.42.0",
-          "resolved": "https://registry.npmjs.org/vscode-debugprotocol/-/vscode-debugprotocol-1.42.0.tgz",
-          "integrity": "sha512-nVsfVCat9FZlOso5SYB1LQQiFGifTyOALpkpJdudDlRXGTpI3mSFiDYXWaoFm7UcfqTOzn1SC7Hqw4d89btT0w=="
-        }
       }
     },
     "vscode-debugadapter-testsupport": {
@@ -4735,13 +4728,6 @@
       "integrity": "sha512-5miGnlsT1VLeXcu04AR+LvD4lwTRlEMAj0nyLgVlMdHzH4RDbX2M2/nXSpRbcsdEHcXoRQlfkAXhM4ZQQ4BUBw==",
       "requires": {
         "vscode-debugprotocol": "^1.42.0"
-      },
-      "dependencies": {
-        "vscode-debugprotocol": {
-          "version": "1.42.0",
-          "resolved": "https://registry.npmjs.org/vscode-debugprotocol/-/vscode-debugprotocol-1.42.0.tgz",
-          "integrity": "sha512-nVsfVCat9FZlOso5SYB1LQQiFGifTyOALpkpJdudDlRXGTpI3mSFiDYXWaoFm7UcfqTOzn1SC7Hqw4d89btT0w=="
-        }
       }
     },
     "vscode-debugprotocol": {
@@ -4767,16 +4753,6 @@
           "version": "6.3.0",
           "resolved": "https://registry.npmjs.org/semver/-/semver-6.3.0.tgz",
           "integrity": "sha512-b39TBaTSfV6yBrapU89p5fKekE2m/NwnDocOVruQFS1/veMgdzuPcnOM34M6CwxW8jH/lxEa5rBoDeUwu5HHTw=="
-        },
-        "vscode-jsonrpc": {
-          "version": "6.0.0",
-          "resolved": "https://registry.npmjs.org/vscode-jsonrpc/-/vscode-jsonrpc-6.0.0.tgz",
-          "integrity": "sha512-wnJA4BnEjOSyFMvjZdpiOwhSq9uDoK8e/kpRJDTaMYzwlkrhG1fwDIZI94CLsLzlCK5cIbMMtFlJlfR57Lavmg=="
-        },
-        "vscode-languageserver-types": {
-          "version": "3.16.0",
-          "resolved": "https://registry.npmjs.org/vscode-languageserver-types/-/vscode-languageserver-types-3.16.0.tgz",
-          "integrity": "sha512-k8luDIWJWyenLc5ToFQQMaSrqCHiLwyKPHKPQZ5zz21vM+vIVUSvsRpcbiECH4WR88K2XZqc4ScRcZ7nk/jbeA=="
         }
       }
     },
diff --git a/package.json b/package.json
index 75af0db..6b788ef 100644
--- a/package.json
+++ b/package.json
@@ -58,7 +58,6 @@
     "vscode-debugadapter-testsupport": "^1.42.0",
     "vscode-debugprotocol": "^1.40.0",
     "vscode-languageclient": "6.1.3",
-    "vscode-languageserver-protocol": "3.15.3",
     "web-request": "^1.0.7"
   },
   "devDependencies": {