$NetBSD$

remove precompiled headers from lib_base

--- Telegram/lib_base/CMakeLists.txt	2020-01-21 15:35:25.000000000 +0000
+++ Telegram/lib_base/CMakeLists.txt
@@ -14,7 +14,6 @@ init_target(lib_base_crash_report_writer
 
 get_filename_component(src_loc . REALPATH)
 
-target_precompile_headers(lib_base PRIVATE ${src_loc}/base/base_pch.h)
 nice_target_sources(lib_base ${src_loc}
 PRIVATE
     base/platform/linux/base_file_utilities_linux.cpp
@@ -149,7 +148,6 @@ PUBLIC
     desktop-app::external_expected
 )
 
-target_precompile_headers(lib_base_crash_report_writer PRIVATE ${src_loc}/base/base_pch.h)
 nice_target_sources(lib_base_crash_report_writer ${src_loc}
 PRIVATE
     base/crash_report_header.cpp
