Revert "src, tools: add debug symbols for node internals"

This reverts commit 446c1ec.

Reverted for breaking `make test-v8`.  The "find all relevant system
headers" logic in `tools/gen-postmortem-metadata.py` needs more work.

Also reverts commit e46c3f7.
("tools: fix typo in gen-postmortem-metadata.py".)

PR-URL: #17272
Refs: #14901
Reviewed-By: Colin Ihrig <cjihrig@gmail.com>
Reviewed-By: Daniel Bevenius <daniel.bevenius@gmail.com>
Reviewed-By: Joyee Cheung <joyeec9h3@gmail.com>
Reviewed-By: Matheus Marchini <matheusdot@gmail.com>
Reviewed-By: Michaël Zasso <targos@protonmail.com>

node.gyp

@@ -178,7 +178,6 @@
 
       'dependencies': [
         'node_js2c#host',
-        'deps/nghttp2/nghttp2.gyp:nghttp2'
       ],
 
       'includes': [
@@ -299,7 +298,6 @@
         # node.gyp is added to the project by default.
         'common.gypi',
         '<(SHARED_INTERMEDIATE_DIR)/node_javascript.cc',
-        '<(SHARED_INTERMEDIATE_DIR)/node-debug-support.cc',
       ],
 
       'variables': {
@@ -972,29 +970,7 @@
             }]]
         }],
       ]
-    },
-    {
-      'target_name': 'node_postmortem_metadata',
-      'type': 'none',
-      'toolsets': ['host'],
-      'actions': [
-        {
-          'action_name': 'gen-postmortem-metadata',
-          'process_outputs_as_sources': 1,
-          'inputs': [
-            './tools/gen-postmortem-metadata.py',
-          ],
-          'outputs': [
-            '<(SHARED_INTERMEDIATE_DIR)/node-debug-support.cc',
-          ],
-          'action': [
-            'python',
-            './tools/gen-postmortem-metadata.py',
-            '<@(_outputs)',
-          ]
-        }
-      ]
-    },
+    }
   ], # end targets
 
   'conditions': [