Remove some TODOs (#6488)

* Remove stale TODOs

* Ban TODO markers from markdown

* Scrub all TODOs from ci/ and book/

net/remote/remote-node.sh

@@ -377,9 +377,9 @@ EOF
     )
 
     if [[ $airdropsEnabled != true ]]; then
-      echo "TODO: archivers not supported without airdrops"
-      # TODO: need to provide the `--identity` argument to an existing system
-      #       account with lamports in it
+      # If this ever becomes a problem, we need to provide the `--identity`
+      # argument to an existing system account with lamports in it
+      echo "Error: archivers not supported without airdrops"
       exit 1
     fi
 

net/remote/remote-sanity.sh

@@ -66,7 +66,6 @@ local|tar|skip)
   solana_cli=solana
   solana_gossip=solana-gossip
   solana_install=solana-install
-  solana_keygen=solana-keygen
   ;;
 *)
   echo "Unknown deployment method: $deployMethod"
@@ -85,11 +84,8 @@ fi
 
 echo "+++ $sanityTargetIp: validators"
 (
-  # Ensure solana-cli has a keypair even though it doesn't really need one...
-  # TODO: Remove when https://github.com/solana-labs/solana/issues/6375 is fixed
-  $solana_keygen new --force -o temp-id.json
   set -x
-  $solana_cli --keypair temp-id.json --url http://"$sanityTargetIp":8899 show-validators
+  $solana_cli --url http://"$sanityTargetIp":8899 show-validators
 )
 
 echo "+++ $sanityTargetIp: node count ($numSanityNodes expected)"

net/scripts/azure-provider.sh

@@ -126,7 +126,7 @@ cloud_Initialize() {
   declare networkName="$1"
   # ec2-provider.sh creates firewall rules programmatically, should do the same
   # here.
-  echo "TODO: create $networkName firewall rules programmatically instead of assuming the 'testnet' tag exists"
+  echo "Note: one day create $networkName firewall rules programmatically instead of assuming the 'testnet' tag exists"
 }
 
 #

net/scripts/disable-background-upgrades.sh

@@ -3,8 +3,8 @@ set -ex
 #
 # Prevent background upgrades that block |apt-get|
 #
-# TODO: This approach is pretty uncompromising.  An alternative solution that
-#       doesn't involve deleting system files would be welcome.
+# This approach is pretty uncompromising.  An alternative solution that doesn't
+# involve deleting system files would be welcome.
 
 [[ $(uname) = Linux ]] || exit 1
 [[ $USER = root ]] || exit 1

net/scripts/gce-provider.sh

@@ -122,7 +122,7 @@ cloud_Initialize() {
   declare networkName="$1"
   # ec2-provider.sh creates firewall rules programmatically, should do the same
   # here.
-  echo "TODO: create $networkName firewall rules programmatically instead of assuming the 'testnet' tag exists"
+  echo "Note: one day create $networkName firewall rules programmatically instead of assuming the 'testnet' tag exists"
 }
 
 #
@@ -170,8 +170,8 @@ cloud_CreateInstances() {
   if $enableGpu; then
     # Custom Ubuntu 18.04 LTS image with CUDA 9.2 and CUDA 10.0 installed
     #
-    # TODO: Unfortunately this image is not public.  When this becomes an issue,
-    # use the stock Ubuntu 18.04 image and programmatically install CUDA after the
+    # Unfortunately this image is not public.  When this becomes an issue, use
+    # the stock Ubuntu 18.04 image and programmatically install CUDA after the
     # instance boots
     #
     imageName="ubuntu-1804-bionic-v20181029-with-cuda-10-and-cuda-9-2"