[Native] Drop explicit -fPIC flag setup

We don't need to explicitly set -fPIC flag everywhere
because since d82109cc92
it is set by default for all ClangArgs users.

kotlin-native/Interop/Indexer/clang.def

@@ -4,13 +4,11 @@ headerFilter = clang-c/**
 
 compiler = clang
 
-compilerOpts = -std=c99 -fPIC
+compilerOpts = -std=c99
 linkerOpts.linux = -Wl,-z,noexecstack
 
 linker = clang++
 
-linkerOpts = -fPIC
-
 strictEnums = CXErrorCode CXCursorKind CXTypeKind CXDiagnosticSeverity CXLoadDiag_Error CXSaveError \
     CXTUResourceUsageKind CXLinkageKind CXVisibilityKind CXLanguageKind CXCallingConv CXChildVisitResult \
     CXTokenKind CXEvalResultKind CXVisitorResult CXResult CXIdxEntityKind