Fix warning: Value stored to 'eEncoding' is never read

eEncoding is assigned again a few lines below.

Change-Id: Ib475095bab30e0c2f066934a10cda650706c2c8a

sal/textenc/tencinfo.cxx

@@ -448,7 +448,6 @@ rtl_TextEncoding SAL_CALL rtl_getTextEncodingFromUnixCharset( const char* pUnixC
                 {
                     if ( Impl_matchString( pSecondPart, pData->mpCharsetStr ) )
                     {
-                        eEncoding = pData->meTextEncoding;
                         break;
                     }