[inspector] Fix double rules warning when compiling inspector with GYP

src/inspector/inspector.gyp

Index: src/inspector/inspector.gyp
diff --git a/src/inspector/inspector.gyp b/src/inspector/inspector.gyp
index 91507bd579f798d27825d304f378f126f68123b1..bedab694a86769f671df24db6a4d4bc36b8053af 100644
--- a/src/inspector/inspector.gyp
+++ b/src/inspector/inspector.gyp
@@ -13,13 +13,7 @@
   'targets': [
     { 'target_name': 'inspector_injected_script',
       'type': 'none',
-      'conditions': [
-        ['want_separate_host_toolset==1', {
-          'toolsets': ['host', 'target'],
-        }, {
-          'toolsets': ['target'],
-        }]
-      ],
+      'toolsets': ['target'],
       'actions': [
         {
           'action_name': 'convert_js_to_cpp_char_array',
@@ -44,13 +38,7 @@
     },
     { 'target_name': 'inspector_debugger_script',
       'type': 'none',
-      'conditions': [
-        ['want_separate_host_toolset==1', {
-          'toolsets': ['host', 'target'],
-        }, {
-          'toolsets': ['target'],
-        }]
-      ],
+      'toolsets': ['target'],
       'actions': [
         {
           'action_name': 'convert_js_to_cpp_char_array',
@@ -75,13 +63,7 @@
     },
     { 'target_name': 'protocol_compatibility',
       'type': 'none',
-      'conditions': [
-        ['want_separate_host_toolset==1', {
-          'toolsets': ['host', 'target'],
-        }, {
-          'toolsets': ['target'],
-        }]
-      ],
+      'toolsets': ['target'],
       'actions': [
         {
           'action_name': 'protocol_compatibility',
@@ -104,13 +86,7 @@
     { 'target_name': 'protocol_generated_sources',
       'type': 'none',
       'dependencies': [ 'protocol_compatibility' ],
-      'conditions': [
-        ['want_separate_host_toolset==1', {
-          'toolsets': ['host', 'target'],
-        }, {
-          'toolsets': ['target'],
-        }]
-      ],
+      'toolsets': ['target'],
       'actions': [
         {
           'action_name': 'protocol_generated_sources',