rm some altcoin language from main docs

Author: SomberNight

docs/protocol-basics.rst

@@ -172,7 +172,7 @@ Originally Electrum clients would download all block headers and
 verify the chain of hashes and header difficulty in order to confirm
 the merkle roots with which to check transaction inclusion.
 
-With the BTC and BCH chains now past height 500,000, the headers form
+With the Bitcoin main chain now past height 500,000, the headers form
 over 40MB of raw data which becomes 80MB if downloaded as text from
 Electrum servers.  The situation is worse for testnet and coins with
 more frequent blocks.  Downloading and verifying all this data on

docs/protocol-ideas.rst

@@ -6,6 +6,10 @@ Protocol Ideas
           not implemented and it is likely they will change and that protocol 2.0 will be
           quite different.
 
+.. note:: This doc is not kept up-to-date, and does not reflect the current thinking of what
+          future protocol versions will look like. Several newer related and unrelated ideas
+          are not listed here.
+
 This protocol version makes changes intended to allow clients and servers to more easily
 scale to support queries about busy addresses.  It has changes to reduce the amount of
 round-trip queries made in common usage, and to make results more compact to reduce

docs/protocol-methods.rst

@@ -52,7 +52,7 @@ Return the block header at the given height.
 
 **Example Result**
 
-With *height* 5 and *cp_height* 0 on the Bitcoin Cash chain:
+With *height* 5 and *cp_height* 0 on the Bitcoin chain:
 
 ::
 
@@ -169,7 +169,7 @@ be confirmed within a certain number of blocks.
 
 **Result**
 
-  The estimated transaction fee in coin units per kilobyte, as a
+  The estimated transaction fee in whole coin units per kilobyte, as a
   floating point number.  If the daemon does not have enough
   information to make an estimate, the integer ``-1`` is returned.
 
@@ -246,7 +246,7 @@ be accepted to the daemon's memory pool.
 
 **Result**
 
-  The fee in whole coin units (BTC, not satoshis for Bitcoin) as a
+  The fee in whole coin units (BTC, not satoshis) as a
   floating point number.
 
 **Example Results**
@@ -568,7 +568,7 @@ Return a raw transaction.
 
   *verbose*
 
-    Whether a verbose coin-specific response is required.
+    Whether the verbose bitcoind response is required.
 
 **Result**
 
@@ -578,9 +578,8 @@ Return a raw transaction.
 
     If *verbose* is :const:`true`:
 
-       The result is a coin-specific dictionary -- whatever the coin
-       daemon returns when asked for a verbose form of the raw
-       transaction.
+       The result is a bitcoind-specific dictionary -- whatever bitcoind
+       returns when asked for a verbose form of the raw transaction.
 
 **Example Results**