Revert "Add possibility to filter out bad (i.e. practically unusable) keys"

Revert until libkleo depends on a version of gpgme that has Key::isBad().

This reverts commit 5314843f.

src/kleo/defaultkeyfilter.cpp

@@ -47,7 +47,6 @@ public:
         mIsOpenPGP(DoesNotMatter),
         mWasValidated(DoesNotMatter),
         mIsDeVs(DoesNotMatter),
-        mBad(DoesNotMatter),
         mOwnerTrust(LevelDoesNotMatter),
         mOwnerTrustReferenceLevel(Key::Unknown),
         mValidity(LevelDoesNotMatter),
@@ -79,7 +78,6 @@ public:
     TriState mIsOpenPGP;
     TriState mWasValidated;
     TriState mIsDeVs;
-    TriState mBad;
 
     LevelState mOwnerTrust;
     GpgME::Key::OwnerTrust mOwnerTrustReferenceLevel;
@@ -124,7 +122,6 @@ bool DefaultKeyFilter::matches(const Key &key, MatchContexts contexts) const
             return false;
         }
     MATCH(d_ptr->mHasSecret, hasSecret);
-    IS_MATCH(Bad);
 #undef MATCH
     if (d_ptr->mIsOpenPGP != DoesNotMatter &&
             bool(key.protocol() == GpgME::OpenPGP) != bool(d_ptr->mIsOpenPGP == Set)) {
@@ -351,11 +348,6 @@ void DefaultKeyFilter::setIsDeVs(DefaultKeyFilter::TriState value) const
     d_ptr->mIsDeVs = value;
 }
 
-void DefaultKeyFilter::setIsBad(DefaultKeyFilter::TriState value) const
-{
-    d_ptr->mBad = value;
-}
-
 QColor DefaultKeyFilter::fgColor() const
 {
     return d_ptr->mFgColor;
@@ -505,8 +497,3 @@ DefaultKeyFilter::TriState DefaultKeyFilter::isDeVS() const
 {
     return d_ptr->mIsDeVs;
 }
-
-DefaultKeyFilter::TriState DefaultKeyFilter::isBad() const
-{
-    return d_ptr->mBad;
-}

src/kleo/defaultkeyfilter.h

@@ -87,7 +87,6 @@ public:
     TriState isOpenPGP() const;
     TriState wasValidated() const;
     TriState isDeVS() const;
-    TriState isBad() const;
 
     LevelState ownerTrust() const;
     GpgME::Key::OwnerTrust ownerTrustReferenceLevel() const;
@@ -113,7 +112,6 @@ public:
     void setIsOpenPGP(const TriState) const;
     void setWasValidated(const TriState) const;
     void setIsDeVs(const TriState) const;
-    void setIsBad(const TriState) const;
 
     void setOwnerTrust(const LevelState) const;
     void setOwnerTrustReferenceLevel(const GpgME::Key::OwnerTrust) const;