remove some unused functions

Identified with `cppcheck --enable=unusedFunction .`.

 - GetSendBufferSize()'s last use removed in
   991955ee81034dc3fbc1c2a8e60c04fc9e0b538c
 - SetPort()'s last use removed in
   7e195e8459ad741368db6bb574981fccb1707268
 - GetfLargeWorkInvalidChainFound() was introduced in
   e3ba0ef95636290a3bb597ddd25d13ea13b034aa and never used

1 files changed, 0 insertions, 6 deletions

diff --git a/src/warnings.cpp b/src/warnings.cpp
index 2c1b1b0e12..75ccfeb116 100644
--- a/src/warnings.cpp
+++ b/src/warnings.cpp
@@ -37,12 +37,6 @@ void SetfLargeWorkInvalidChainFound(bool flag)
     fLargeWorkInvalidChainFound = flag;
 }
 
-bool GetfLargeWorkInvalidChainFound()
-{
-    LOCK(cs_warnings);
-    return fLargeWorkInvalidChainFound;
-}
-
 std::string GetWarnings(const std::string& strFor)
 {
     std::string strStatusBar;