update grammar script: remove unused properties

extensions/cpp/syntaxes/c.tmLanguage.json

@@ -5,14 +5,8 @@
 		"Once accepted there, we are happy to receive an update request."
 	],
 	"version": "https://github.com/atom/language-c/commit/9c0c5f202741a5647025db8d5df5fefba47b036c",
-	"scopeName": "source.c",
-	"fileTypes": [
-		"c",
-		"h.in",
-		"xpm"
-	],
-	"firstLineMatch": "(?i)-\\*-[^*]*(Mode:\\s*)?C(\\s*;.*?)?\\s*-\\*-",
 	"name": "C",
+	"scopeName": "source.c",
 	"patterns": [
 		{
 			"include": "#preprocessor-rule-enabled"

extensions/cpp/syntaxes/cpp.tmLanguage.json

@@ -5,28 +5,8 @@
 		"Once accepted there, we are happy to receive an update request."
 	],
 	"version": "https://github.com/atom/language-c/commit/3a269f88b12e512fb9495dc006a1dabf325d3d7f",
-	"scopeName": "source.cpp",
-	"fileTypes": [
-		"cc",
-		"cpp",
-		"cp",
-		"cxx",
-		"c++",
-		"cu",
-		"cuh",
-		"h",
-		"hh",
-		"hpp",
-		"hxx",
-		"h++",
-		"inl",
-		"ino",
-		"ipp",
-		"tcc",
-		"tpp"
-	],
-	"firstLineMatch": "(?i)-\\*-[^*]*(Mode:\\s*)?C\\+\\+(\\s*;.*?)?\\s*-\\*-",
 	"name": "C++",
+	"scopeName": "source.cpp",
 	"patterns": [
 		{
 			"include": "#special_block"

extensions/cpp/syntaxes/platform.tmLanguage.json

@@ -5,10 +5,9 @@
 		"Once accepted there, we are happy to receive an update request."
 	],
 	"version": "https://github.com/textmate/c.tmbundle/commit/9aa365882274ca52f01722f3dbb169b9539a20ee",
-	"comment": "This file was generated with clang-C using MacOSX10.12.sdk",
-	"fileTypes": [],
-	"hideFromUser": true,
 	"name": "Platform",
+	"scopeName": "source.c.platform",
+	"comment": "This file was generated with clang-C using MacOSX10.12.sdk",
 	"patterns": [
 		{
 			"match": "\\bkCF(?:CalendarUnitWeek|Gregorian(?:AllUnits|Units(?:Days|Hours|M(?:inutes|onths)|Seconds|Years)))\\b",
@@ -568,7 +567,5 @@
 				}
 			]
 		}
-	},
-	"scopeName": "source.c.platform",
-	"uuid": "3E3CB242-CEBA-4B61-9806-9A97B5783D2A"
+	}
 }