[build] Remove #pragma diagnostic for boost

Boost is now included as a system header and the compiler
should ignore it when issuing warnings.

include/mbgl/util/expected.hpp

@@ -1,9 +1,6 @@
 #pragma once
 
-#pragma GCC diagnostic push
-#pragma GCC diagnostic ignored "-Wshadow"
 #include <expected.hpp>
-#pragma GCC diagnostic pop
 
 namespace mbgl {
 

platform/default/png_writer.cpp

@@ -2,10 +2,7 @@
 #include <mbgl/util/image.hpp>
 #include <mbgl/util/premultiply.hpp>
 
-#pragma GCC diagnostic push
-#pragma GCC diagnostic ignored "-Wshadow"
 #include <boost/crc.hpp>
-#pragma GCC diagnostic pop
 
 #include <cassert>
 #include <cstring>

platform/default/utf.cpp

@@ -1,16 +1,7 @@
 #include <mbgl/util/utf.hpp>
 
-#if defined(__GNUC__) && __GNUC__ >= 7
-#pragma GCC diagnostic push
-#pragma GCC diagnostic ignored "-Wimplicit-fallthrough"
-#endif // defined(__GNUC__) && __GNUC__ >= 7
-
 #include <boost/locale/encoding_utf.hpp>
 
-#if defined(__GNUC__) && __GNUC__ >= 7
-#pragma GCC diagnostic pop
-#endif // defined(__GNUC__) && __GNUC__ >= 7
-
 namespace mbgl {
 namespace util {
 

src/mbgl/annotation/symbol_annotation_impl.hpp

@@ -5,29 +5,12 @@
 
 #include <string>
 
-#pragma GCC diagnostic push
-#pragma GCC diagnostic ignored "-Wunused-function"
-#pragma GCC diagnostic ignored "-Wunused-parameter"
-#pragma GCC diagnostic ignored "-Wunused-variable"
-#pragma GCC diagnostic ignored "-Wshadow"
-#ifdef __clang__
-#pragma GCC diagnostic ignored "-Wunknown-pragmas"
-#endif
-#pragma GCC diagnostic ignored "-Wpragmas"
-#pragma GCC diagnostic ignored "-Wdeprecated-register"
-#pragma GCC diagnostic ignored "-Wshorten-64-to-32"
-#pragma GCC diagnostic ignored "-Wunused-local-typedefs"
-#ifndef __clang__
-#pragma GCC diagnostic ignored "-Wmaybe-uninitialized"
-#pragma GCC diagnostic ignored "-Wmisleading-indentation"
-#endif
 #include <boost/geometry.hpp>
 #include <boost/geometry/geometries/point.hpp>
 #include <boost/geometry/geometries/box.hpp>
 #include <boost/geometry/geometries/register/point.hpp>
 #include <boost/geometry/geometries/register/box.hpp>
 #include <boost/geometry/index/rtree.hpp>
-#pragma GCC diagnostic pop
 
 namespace mbgl {
 

src/mbgl/text/language_tag.cpp

@@ -1,18 +1,8 @@
 #include <mbgl/text/language_tag.hpp>
 
-#pragma GCC diagnostic push
-#pragma GCC diagnostic ignored "-Wunknown-pragmas"
-#pragma GCC diagnostic ignored "-Wunused-parameter"
-#pragma GCC diagnostic ignored "-Wshadow"
-#pragma clang diagnostic push
-#pragma clang diagnostic ignored "-Wshorten-64-to-32"
-#pragma clang diagnostic ignored "-Wunknown-warning-option"
-#pragma clang diagnostic ignored "-Wtautological-constant-compare"
 #include <boost/spirit/include/qi.hpp>
 #include <boost/spirit/include/phoenix_core.hpp>
 #include <boost/spirit/include/phoenix_operator.hpp>
-#pragma clang diagnostic pop
-#pragma GCC diagnostic pop
 
 #include <sstream>
 

src/mbgl/util/http_header.cpp

@@ -2,20 +2,9 @@
 
 #include <mbgl/util/string.hpp>
 
-#pragma GCC diagnostic push
-#pragma GCC diagnostic ignored "-Wunknown-pragmas"
-#pragma GCC diagnostic ignored "-Wunused-parameter"
-#pragma GCC diagnostic ignored "-Wshadow"
-#pragma clang diagnostic push
-
-#pragma clang diagnostic ignored "-Wshorten-64-to-32"
-#pragma clang diagnostic ignored "-Wunknown-warning-option"
-#pragma clang diagnostic ignored "-Wtautological-constant-compare"
 #include <boost/spirit/include/qi.hpp>
 #include <boost/spirit/include/phoenix_core.hpp>
 #include <boost/spirit/include/phoenix_operator.hpp>
-#pragma clang diagnostic pop
-#pragma GCC diagnostic pop
 
 namespace mbgl {
 namespace http {