softfloat: remove dead assignments, spotted by clang

Value stored to 'bSign' is never read.

Signed-off-by: Blue Swirl <blauwirbel@gmail.com>

fpu/softfloat.c

diff --git a/fpu/softfloat.c b/fpu/softfloat.c
index 395f9b1..e6065b4 100644
--- a/fpu/softfloat.c
+++ b/fpu/softfloat.c
@@ -1910,7 +1910,7 @@
 
 float32 float32_rem( float32 a, float32 b STATUS_PARAM )
 {
-    flag aSign, bSign, zSign;
+    flag aSign, zSign;
     int16 aExp, bExp, expDiff;
     bits32 aSig, bSig;
     bits32 q;
@@ -1923,7 +1923,6 @@
     aSign = extractFloat32Sign( a );
     bSig = extractFloat32Frac( b );
     bExp = extractFloat32Exp( b );
-    bSign = extractFloat32Sign( b );
     if ( aExp == 0xFF ) {
         if ( aSig || ( ( bExp == 0xFF ) && bSig ) ) {
             return propagateFloat32NaN( a, b STATUS_VAR );
@@ -3062,7 +3061,7 @@
 
 float64 float64_rem( float64 a, float64 b STATUS_PARAM )
 {
-    flag aSign, bSign, zSign;
+    flag aSign, zSign;
     int16 aExp, bExp, expDiff;
     bits64 aSig, bSig;
     bits64 q, alternateASig;
@@ -3073,7 +3072,6 @@
     aSign = extractFloat64Sign( a );
     bSig = extractFloat64Frac( b );
     bExp = extractFloat64Exp( b );
-    bSign = extractFloat64Sign( b );
     if ( aExp == 0x7FF ) {
         if ( aSig || ( ( bExp == 0x7FF ) && bSig ) ) {
             return propagateFloat64NaN( a, b STATUS_VAR );
@@ -4032,7 +4030,7 @@
 
 floatx80 floatx80_rem( floatx80 a, floatx80 b STATUS_PARAM )
 {
-    flag aSign, bSign, zSign;
+    flag aSign, zSign;
     int32 aExp, bExp, expDiff;
     bits64 aSig0, aSig1, bSig;
     bits64 q, term0, term1, alternateASig0, alternateASig1;
@@ -4043,7 +4041,6 @@
     aSign = extractFloatx80Sign( a );
     bSig = extractFloatx80Frac( b );
     bExp = extractFloatx80Exp( b );
-    bSign = extractFloatx80Sign( b );
     if ( aExp == 0x7FFF ) {
         if (    (bits64) ( aSig0<<1 )
              || ( ( bExp == 0x7FFF ) && (bits64) ( bSig<<1 ) ) ) {
@@ -5144,7 +5141,7 @@
 
 float128 float128_rem( float128 a, float128 b STATUS_PARAM )
 {
-    flag aSign, bSign, zSign;
+    flag aSign, zSign;
     int32 aExp, bExp, expDiff;
     bits64 aSig0, aSig1, bSig0, bSig1, q, term0, term1, term2;
     bits64 allZero, alternateASig0, alternateASig1, sigMean1;
@@ -5158,7 +5155,6 @@
     bSig1 = extractFloat128Frac1( b );
     bSig0 = extractFloat128Frac0( b );
     bExp = extractFloat128Exp( b );
-    bSign = extractFloat128Sign( b );
     if ( aExp == 0x7FFF ) {
         if (    ( aSig0 | aSig1 )
              || ( ( bExp == 0x7FFF ) && ( bSig0 | bSig1 ) ) ) {