[Python] Remove unused functions in FloatingPoint.swift.gyb

Removed:
* getExponentBitCount(bits)
* getSignalingNanBitPattern(bits)
* llvmIntrinsicSuffix(bits)

Author: practicalswift

stdlib/public/core/FloatingPoint.swift.gyb

@@ -60,14 +60,6 @@ def cFuncSuffix(bits):
     if bits == 80:
         return 'l'
 
-def llvmIntrinsicSuffix(bits):
-    if bits == 32:
-        return 'f32'
-    if bits == 64:
-        return 'f64'
-    if bits == 80:
-        return 'f80'
-
 def getInfBitPattern(bits):
     if bits == 32:
         return '0x7f800000'
@@ -82,27 +74,13 @@ def getQuietNaNBitPattern(bits):
         return '0x7ff8000000000000'
     return 'error'
 
-def getSignalingNanBitPattern(bits):
-    if bits == 32:
-        return '0x7fa00000'
-    if bits == 64:
-        return '0x7ff4000000000000'
-    return 'error'
-
 def getMinNormalBitPattern(bits):
     if bits == 32:
         return '0x00800000'
     if bits == 64:
         return '0x0010000000000000'
     return 'error'
 
-def getExponentBitCount(bits):
-    if bits == 32:
-        return '8'
-    if bits == 64:
-        return '11'
-    return 'error'
-
 def getSignificantBitCount(bits):
     if bits == 32:
         return '23'