libmkvextractor: Remove unused local filed rangeSpecified

It will remove compiling warnings

Test: m libmkvextractor

Signed-off-by: utzcoz <utzcoz@gmail.com>
Change-Id: I3d49950a4c16c58176ae966b8f6c8b25085c1d89
diff --git a/media/module/extractors/mkv/MatroskaExtractor.cpp b/media/module/extractors/mkv/MatroskaExtractor.cpp
index 2b72387..6900341 100644
--- a/media/module/extractors/mkv/MatroskaExtractor.cpp
+++ b/media/module/extractors/mkv/MatroskaExtractor.cpp
@@ -1800,7 +1800,6 @@
         int32_t isotransfer = 2; // ISO unspecified
         int32_t coeffs = 2; // ISO unspecified
         bool fullRange = false; // default
-        bool rangeSpecified = false;
 
         if (isValidInt32ColourValue(color->primaries)) {
             primaries = color->primaries;
@@ -1816,7 +1815,6 @@
             // We only support MKV broadcast range (== limited) and full range.
             // We treat all other value as the default limited range.
             fullRange = color->range == 2 /* MKV fullRange */;
-            rangeSpecified = true;
         }
 
         int32_t range = 0;